ASTROSAT CZTI

Data Quality Report

Orbit 53776

Creation date: 2025-09-07T17:24:16.869001
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_022T04_9000006506_53776cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53776cztM0_level2_quad_clean.evt
Size (bytes)745,721,28072,063,360
Size711.2 MB 68.7 MB
Events in quadrant A15,094,14064,467
Events in quadrant B4,059,871604,095
Events in quadrant C4,668,570553,258
Events in quadrant D3,307,941534,518

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490641
B0163291
C0180531
D0142761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6095556891.353568%
B60955168.465956%
C60963365.511811%
D60961502.460630%

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 7204 6094 5540 5540 76.90% 90.91%
B 7205 6095 221 221 3.07% 3.63%
C 7206 6096 270 270 3.75% 4.43%
D 7206 6096 104 104 1.44% 1.71%

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 3 63 13593387 163931.09 334 325 82.9
A 4 249 79473 954.52 334 325 82.9
A 5 241 32685 390.26 334 325 82.9
B 8 234 737176 5284.63 646 623 139.4
B 6 255 498355 3571.13 646 623 139.4
B 4 81 84537 602.07 646 623 139.4
C 15 224 1389783 7971.25 636 632 174.3
C 7 64 222734 1274.47 636 632 174.3
C 3 242 162526 928.98 636 632 174.3
D 2 120 200457 1111.34 640 611 179.8
D 3 224 152242 843.22 640 611 179.8
D 13 153 57526 316.5 640 611 179.8

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