ASTROSAT CZTI

Data Quality Report

Orbit 38021

Creation date: 2024-06-27T21:47:24.915985
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/AS1A11_082T01_9000005356_38021cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38021cztM0_level2_quad_clean.evt
Size (bytes)721,206,720176,077,440
Size687.8 MB 167.9 MB
Events in quadrant A5,922,3471,178,472
Events in quadrant B6,126,2441,212,442
Events in quadrant C5,410,6181,172,585
Events in quadrant D8,415,9851,033,229

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242854
B0250953
C0227393
D0321833

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10605730.688355%
B106051831.725601%
C10605570.537482%
D106055625.299387%

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 13471 10607 40 40 0.30% 0.38%
B 13471 10607 105 105 0.78% 0.99%
C 13471 10607 37 37 0.27% 0.35%
D 13471 10607 515 515 3.82% 4.86%

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 10 83 707068 2875.23 1202 1178 245.5
A 12 16 380393 1544.62 1202 1178 245.5
A 12 194 63247 252.82 1202 1178 245.5
B 5 172 310272 1351.83 1201 1168 228.7
B 4 232 233609 1016.56 1201 1168 228.7
B 0 197 186188 809.17 1201 1168 228.7
C 15 214 445284 1628.19 1176 1185 272.8
C 1 23 132717 482.23 1176 1185 272.8
C 14 254 109593 397.45 1176 1185 272.8
D 12 227 1238271 4446.7 1145 1114 278.2
D 5 222 840241 3016.06 1145 1114 278.2
D 2 250 455522 1633.27 1145 1114 278.2

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