ASTROSAT CZTI

Data Quality Report

Orbit 20190307_A05_075T05_9000002764_level2

Creation date: 2025-11-28T13:01:12.296255
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/AS1A05_075T05_9000002764cztM0_level2.fits modeM0/AS1A05_075T05_9000002764cztM0_level2_quad_clean.evt
Size (bytes)237,412,800227,566,080
Size226.4 MB 217.0 MB
Events in quadrant A1,430,9541,339,679
Events in quadrant B1,396,6541,364,382
Events in quadrant C1,354,4781,208,082
Events in quadrant D1,231,1801,203,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0549810
B0527340
C0646900
D0632240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05240
B05240
C05240
D05240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A258204121.595662%
B258201740.673896%
C2582020047.761425%
D258205822.254067%

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 29328 25815 0 0 0.00% 0.00%
B 29328 25818 0 0 0.00% 0.00%
C 29328 25640 0 0 0.00% 0.00%
D 29328 25818 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 1272 9.67 373 348 95.5
A 7 110 1192 8.83 373 348 95.5
A 9 19 1080 7.66 373 348 95.5
B 2 9 1141 10.62 368 350 74.5
B 3 17 949 8.04 368 350 74.5
B 2 8 944 7.97 368 350 74.5
C 9 242 943 6.52 358 333 93.5
C 3 126 940 6.49 358 333 93.5
C 12 241 938 6.47 358 333 93.5
D 10 190 943 6.54 351 319 95.5
D 3 14 922 6.32 351 319 95.5
D 15 46 869 5.76 351 319 95.5

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