ASTROSAT CZTI

Data Quality Report

Orbit 20180411_G08_036T01_9000002034_level2

Creation date: 2025-11-21T16:52:32.408500
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/AS1G08_036T01_9000002034cztM0_level2.fits modeM0/AS1G08_036T01_9000002034cztM0_level2_quad_clean.evt
Size (bytes)252,020,160124,879,680
Size240.3 MB 119.1 MB
Events in quadrant A1,573,916558,252
Events in quadrant B1,499,414582,516
Events in quadrant C1,551,796515,353
Events in quadrant D1,335,128450,423

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505620
B0561340
C0510600
D0589900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04940
B04940
C04940
D04940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243241360.559119%
B243242651.089459%
C243241040.427561%
D243244351.788357%

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 30629 24324 0 0 0.00% 0.00%
B 30629 24324 0 0 0.00% 0.00%
C 30629 24324 0 0 0.00% 0.00%
D 30629 24324 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 0 29 1438 10.12 409 385 104.1
A 7 110 1249 8.3 409 385 104.1
A 9 19 1182 7.66 409 385 104.1
B 2 9 1280 11.34 395 379 79.5
B 5 128 1052 8.47 395 379 79.5
B 5 225 1037 8.28 395 379 79.5
C 1 81 1167 7.42 409 384 105.5
C 1 80 1147 7.23 409 384 105.5
C 12 241 1093 6.72 409 384 105.5
D 10 189 956 5.99 380 347 101.6
D 6 67 935 5.79 380 347 101.6
D 6 231 933 5.77 380 347 101.6

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