ASTROSAT CZTI

Data Quality Report

Orbit 20200619_A09_043T02_9000003726_level2

Creation date: 2025-12-12T22:39:58.858852
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/AS1A09_043T02_9000003726cztM0_level2.fits modeM0/AS1A09_043T02_9000003726cztM0_level2_quad_clean.evt
Size (bytes)1,986,448,3201,541,885,760
Size1.9 GB 1.4 GB
Events in quadrant A12,612,4048,916,701
Events in quadrant B12,080,4288,953,740
Events in quadrant C11,952,8748,309,712
Events in quadrant D10,218,7607,219,040

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04330470
B04200020
C04112230
D06071210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039480
B039480
C039480
D039480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19404940812.103077%
B19404932941.697509%
C19404938491.983520%
D194049125216.452494%

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 226387 194048 0 0 0.00% 0.00%
B 226387 194049 0 0 0.00% 0.00%
C 226387 194048 0 0 0.00% 0.00%
D 226387 193952 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 10293 9.13 3286 3095 788.6
A 7 110 10074 8.85 3286 3095 788.6
A 9 19 9218 7.76 3286 3095 788.6
B 2 9 9521 10.46 3199 3062 617.2
B 5 128 7955 7.93 3199 3062 617.2
B 2 8 7853 7.76 3199 3062 617.2
C 1 81 8987 7.62 3155 2952 792.1
C 1 80 8976 7.6 3155 2952 792.1
C 12 241 8253 6.69 3155 2952 792.1
D 3 14 7309 6.04 2920 2659 770.0
D 7 3 7245 5.96 2920 2659 770.0
D 10 189 7201 5.9 2920 2659 770.0

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