ASTROSAT CZTI

Data Quality Report

Orbit 59268

Creation date: 2026-09-11T00:07:49.101749
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/AS1T05_271T01_9000006604_59268cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59268cztM0_level2_quad_clean.evt
Size (bytes)459,529,92099,406,080
Size438.2 MB 94.8 MB
Events in quadrant A3,602,702654,879
Events in quadrant B3,155,337721,788
Events in quadrant C3,950,023639,012
Events in quadrant D5,809,962552,342

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150532
B0136782
C0157922
D0216992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63341983.125987%
B63341001.578781%
C63341532.415535%
D633467010.577834%

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 7559 6335 127 127 1.68% 2.00%
B 7559 6335 26 26 0.34% 0.41%
C 7559 6335 109 109 1.44% 1.72%
D 7559 6335 565 565 7.47% 8.92%

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 10 251 485913 2729.52 726 706 177.8
A 0 24 259571 1456.24 726 706 177.8
A 15 233 15079 80.85 726 706 177.8
B 4 236 95660 611.1 729 701 155.4
B 4 201 73061 465.67 729 701 155.4
B 10 247 34334 216.44 729 701 155.4
C 12 252 547278 2751.61 725 717 198.6
C 3 233 189952 952.69 725 717 198.6
C 15 147 128354 642.58 725 717 198.6
D 12 110 1095323 5476.44 703 673 199.9
D 5 38 1058735 5293.4 703 673 199.9
D 11 129 558535 2790.94 703 673 199.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct