ASTROSAT CZTI

Data Quality Report

Orbit 20220202_C07_001T05_9000004902_level2

Creation date: 2025-12-31T19:29:40.042118
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/AS1C07_001T05_9000004902cztM0_level2.fits modeM0/AS1C07_001T05_9000004902cztM0_level2_quad_clean.evt
Size (bytes)770,952,960994,104,000
Size735.2 MB 948.1 MB
Events in quadrant A4,756,6546,514,442
Events in quadrant B4,490,3746,453,318
Events in quadrant C4,665,0786,218,693
Events in quadrant D3,819,7525,310,288

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016680
B016680
C016680
D016680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02880
C02880
D02890

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660810
B01924640
C01892930
D03099350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81881970.118465%
B8188117922.188542%
C8188114691.794067%
D81881838510.240471%

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 109985 81880 0 0 0.00% 0.00%
B 109985 81864 0 0 0.00% 0.00%
C 109985 81866 0 0 0.00% 0.00%
D 109985 81847 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 9 19 3990 9.3 1239 1165 303.9
A 0 29 3818 8.73 1239 1165 303.9
A 7 110 3817 8.73 1239 1165 303.9
B 2 9 4070 12.69 1191 1139 230.9
B 3 80 3598 10.65 1191 1139 230.9
B 2 8 3318 9.44 1191 1139 230.9
C 1 81 3920 8.8 1233 1164 313.2
C 1 80 3850 8.58 1233 1164 313.2
C 3 202 3673 8.01 1233 1164 313.2
D 10 189 2813 6.3 1093 1002 287.6
D 10 113 2777 6.17 1093 1002 287.6
D 7 3 2773 6.16 1093 1002 287.6

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