ASTROSAT CZTI

Data Quality Report

Orbit 53512

Creation date: 2025-08-19T17:14:24.998265
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_002T07_9000006498_53512cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53512cztM0_level2_quad_clean.evt
Size (bytes)828,619,20085,536,000
Size790.2 MB 81.6 MB
Events in quadrant A11,320,101426,304
Events in quadrant B3,505,988728,241
Events in quadrant C11,386,492381,670
Events in quadrant D3,945,025589,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382574
B0148271
C0385001
D0163061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6656293044.020433%
B66571402.103049%
C6657305045.816434%
D66572203.304792%

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 7726 6656 2452 2452 31.74% 36.84%
B 7727 6658 14 14 0.18% 0.21%
C 7727 6658 2580 2580 33.39% 38.75%
D 7727 6658 149 149 1.93% 2.24%

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 4335820 28090.0 629 616 154.3
A 3 62 3467841 22465.92 629 616 154.3
A 15 174 974208 6308.4 629 616 154.3
B 5 185 131640 815.75 745 719 160.5
B 2 249 98364 608.41 745 719 160.5
B 4 171 81548 503.63 745 719 160.5
C 7 64 5257698 34526.85 556 552 152.3
C 12 254 1718843 11285.05 556 552 152.3
C 1 241 1680885 11035.76 556 552 152.3
D 2 153 495913 2439.68 723 693 203.0
D 3 12 258448 1269.82 723 693 203.0
D 1 0 56538 275.12 723 693 203.0

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