ASTROSAT CZTI

Data Quality Report

Orbit 20190901_A05_037T01_9000003140_level2

Creation date: 2025-12-03T11:37:12.229208
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_037T01_9000003140cztM0_level2.fits modeM0/AS1A05_037T01_9000003140cztM0_level2_quad_clean.evt
Size (bytes)2,305,497,6001,974,545,280
Size2.1 GB 1.8 GB
Events in quadrant A14,460,05211,631,480
Events in quadrant B13,845,51211,672,783
Events in quadrant C14,092,91411,329,602
Events in quadrant D11,243,1668,997,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05083460
B05196240
C04966450
D08407820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048180
B048180
C048180
D048180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23598532681.384834%
B23598745801.940785%
C23598738861.646701%
D2359863476614.732230%

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 282498 235955 0 0 0.00% 0.00%
B 282498 235924 0 0 0.00% 0.00%
C 282498 235964 0 0 0.00% 0.00%
D 282498 233542 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 14089 11.6 3772 3548 908.6
A 7 110 11642 8.91 3772 3548 908.6
A 0 30 11066 8.27 3772 3548 908.6
B 2 9 11055 10.65 3658 3489 710.1
B 2 8 9298 8.18 3658 3489 710.1
B 14 254 9017 7.78 3658 3489 710.1
C 1 80 10835 7.72 3716 3464 954.4
C 1 81 10801 7.69 3716 3464 954.4
C 12 241 9796 6.63 3716 3464 954.4
D 3 14 8134 6.08 3219 2929 855.9
D 7 3 7953 5.87 3219 2929 855.9
D 10 189 7932 5.85 3219 2929 855.9

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