ASTROSAT CZTI

Data Quality Report

Orbit 56196

Creation date: 2026-02-16T10:42:14.248571
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_083T04_9000006550_56196cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56196cztM0_level2_quad_clean.evt
Size (bytes)1,558,212,480208,765,440
Size1.5 GB 199.1 MB
Events in quadrant A18,918,2781,162,551
Events in quadrant B10,949,6881,438,670
Events in quadrant C11,046,4551,276,652
Events in quadrant D15,289,2841,124,837

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0693743
B0459823
C0471283
D0590084

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19105306216.027218%
B191057123.726773%
C191058484.438629%
D1910413527.077052%

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 20823 19389 2483 2483 11.92% 12.81%
B 20823 19391 334 334 1.60% 1.72%
C 20823 19384 584 584 2.80% 3.01%
D 20822 19389 1149 1149 5.52% 5.93%

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 15 32 3935814 8473.3 1888 1841 464.3
A 7 64 2671203 5749.48 1888 1841 464.3
A 8 176 2593120 5581.3 1888 1841 464.3
B 5 185 1512234 3527.52 2001 1921 428.2
B 0 171 316048 733.68 2001 1921 428.2
B 0 213 230490 533.85 2001 1921 428.2
C 12 254 1536375 2858.66 1939 1922 536.8
C 12 252 865461 1608.76 1939 1922 536.8
C 15 234 627140 1164.77 1939 1922 536.8
D 11 129 4382384 8219.91 1903 1819 532.9
D 6 239 979819 1835.17 1903 1819 532.9
D 8 129 508324 950.43 1903 1819 532.9

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