ASTROSAT CZTI

Data Quality Report

Orbit 54403

Creation date: 2025-10-18T17:23:59.020568
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/AS1A14_126T19_9000006518_54403cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54403cztM0_level2_quad_clean.evt
Size (bytes)660,286,08081,440,640
Size629.7 MB 77.7 MB
Events in quadrant A2,879,737602,121
Events in quadrant B3,321,627640,125
Events in quadrant C6,093,903482,167
Events in quadrant D11,637,134284,499

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136371
B0146551
C0229241
D0390831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65461782.719218%
B65472563.910188%
C6547124919.077440%
D6547345452.756988%

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 6936 6547 9 9 0.13% 0.14%
B 6937 6547 55 55 0.79% 0.84%
C 6937 6547 1098 1098 15.83% 16.77%
D 6937 6547 2776 2776 40.02% 42.40%

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 12 15 47414 267.0 707 689 175.0
A 4 3 39362 220.99 707 689 175.0
A 8 246 29708 165.82 707 689 175.0
B 0 213 203672 1363.98 687 661 148.8
B 10 247 104429 697.19 687 661 148.8
B 10 14 79033 526.56 687 661 148.8
C 1 241 2571445 15131.96 620 612 169.9
C 13 3 802133 4717.76 620 612 169.9
C 14 254 128250 751.28 620 612 169.9
D 8 176 8730245 63359.3 477 455 137.8
D 2 172 322971 2340.76 477 455 137.8
D 3 12 155059 1122.09 477 455 137.8

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