ASTROSAT CZTI

Data Quality Report

Orbit 57848

Creation date: 2026-06-07T12:09:27.874450
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_125T11_9000006582_57848cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57848cztM0_level2_quad_clean.evt
Size (bytes)487,886,400109,379,520
Size465.3 MB 104.3 MB
Events in quadrant A3,225,638725,187
Events in quadrant B3,456,127774,525
Events in quadrant C7,033,732632,803
Events in quadrant D3,746,871644,672

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156620
B0161800
C0263164
D0169440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7688210.273153%
B76891001.300559%
C768877910.132674%
D7688450.585328%

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 7688 7688 0 0 0.00% 0.00%
B 7689 7689 25 25 0.33% 0.33%
C 7688 7688 569 569 7.40% 7.40%
D 7688 7688 40 40 0.52% 0.52%

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 3 128 40339 197.66 814 793 200.1
A 3 14 34125 166.6 814 793 200.1
A 3 137 9982 45.93 814 793 200.1
B 5 185 117553 678.9 808 778 172.0
B 7 252 30859 174.88 808 778 172.0
B 10 247 28748 162.61 808 778 172.0
C 9 38 2350616 11326.5 770 760 207.5
C 15 224 1351433 6510.36 770 760 207.5
C 15 208 104281 498.98 770 760 207.5
D 3 12 147309 666.93 788 752 219.7
D 2 62 125492 567.65 788 752 219.7
D 2 249 118930 537.79 788 752 219.7

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