ASTROSAT CZTI

Data Quality Report

Orbit 20190209_C04_009T03_9000002714_level2

Creation date: 2025-11-27T15:21:00.907699
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/AS1C04_009T03_9000002714cztM0_level2.fits modeM0/AS1C04_009T03_9000002714cztM0_level2_quad_clean.evt
Size (bytes)220,746,240256,659,840
Size210.5 MB 244.8 MB
Events in quadrant A1,351,0421,601,517
Events in quadrant B1,294,3261,619,148
Events in quadrant C1,305,9041,543,388
Events in quadrant D1,138,3381,413,044

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0489520
B0484690
C0472320
D0556780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231842030.875604%
B231841730.746204%
C231841570.677191%
D231844601.984127%

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 27254 23165 0 0 0.00% 0.00%
B 27254 23184 0 0 0.00% 0.00%
C 27254 23184 0 0 0.00% 0.00%
D 27254 23183 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 1230 10.21 351 331 88.0
A 7 110 1117 8.93 351 331 88.0
A 9 19 1013 7.75 351 331 88.0
B 2 9 1077 10.73 342 328 69.8
B 2 8 917 8.44 342 328 69.8
B 5 128 868 7.74 342 328 69.8
C 12 241 958 7.11 345 325 89.0
C 3 126 879 6.23 345 325 89.0
C 7 111 874 6.17 345 325 89.0
D 10 190 904 6.79 325 295 89.7
D 10 189 871 6.42 325 295 89.7
D 3 14 839 6.07 325 295 89.7

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