ASTROSAT CZTI

Data Quality Report

Orbit 20160129_G02_021T10_9000000304_level2

Creation date: 2025-10-27T11:16:58.309636
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G02_021T10_9000000304cztM0_level2.fits modeM0/AS1G02_021T10_9000000304cztM0_level2_quad_clean.evt
Size (bytes)901,805,760891,679,680
Size860.0 MB 850.4 MB
Events in quadrant A5,250,4685,113,873
Events in quadrant B5,201,8825,185,233
Events in quadrant C5,180,4644,945,394
Events in quadrant D4,468,9524,551,053

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021040
B021040
C021040
D021040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04529820
B04614350
C04346710
D04233740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140189685676072140187732541486
B1140189685676072140187732541486
C1140189685676072140187732541486
D1140189685676072140187732541486

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1051946740.640721%
B1051895730.544734%
C1051924850.461062%
D10519610641.011445%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 122373 105192 0 0 0.00% 0.00%
B 122373 105193 0 0 0.00% 0.00%
C 122373 105194 0 0 0.00% 0.00%
D 122373 105178 0 0 0.00% 0.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 7 110 4788 10.93 1362 1266 322.3
A 0 29 4726 10.74 1362 1266 322.3
A 14 79 3759 7.74 1362 1266 322.3
B 2 9 4211 11.56 1373 1301 251.8
B 5 128 3567 9.0 1373 1301 251.8
B 10 225 3394 8.31 1373 1301 251.8
C 9 242 3438 6.48 1367 1261 336.0
C 12 241 3423 6.43 1367 1261 336.0
C 2 191 3313 6.11 1367 1261 336.0
D 1 19 3354 7.28 1276 1166 300.6
D 6 231 3223 6.84 1276 1166 300.6
D 11 82 3175 6.68 1276 1166 300.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter