ASTROSAT CZTI

Data Quality Report

Orbit 56414

Creation date: 2026-03-03T02:24:28.385299
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_083T05_9000006554_56414cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56414cztM0_level2_quad_clean.evt
Size (bytes)2,267,674,560200,617,920
Size2.1 GB 191.3 MB
Events in quadrant A27,780,663979,069
Events in quadrant B14,556,8151,550,548
Events in quadrant C8,718,4251,537,274
Events in quadrant D31,528,664791,554

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0946155
B0553743
C0390523
D01059063

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17626726941.240213%
B17626234513.304210%
C176261730.981505%
D17626815546.266878%

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 19246 17629 6480 6480 33.67% 36.76%
B 19246 17629 1435 1435 7.46% 8.14%
C 19246 17629 120 120 0.62% 0.68%
D 19246 17628 7951 7951 41.31% 45.10%

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 12 3 13731077 37242.94 1478 1441 368.7
A 4 95 2283678 6190.78 1478 1441 368.7
A 12 194 1743244 4724.81 1478 1441 368.7
B 4 206 5474767 14511.98 1776 1714 377.1
B 5 185 602308 1592.5 1776 1714 377.1
B 8 128 474331 1253.16 1776 1714 377.1
C 12 254 639310 1292.71 1807 1791 493.2
C 13 3 266364 536.48 1807 1791 493.2
C 12 252 169862 340.8 1807 1791 493.2
D 8 129 23936159 65624.79 1274 1216 364.7
D 5 113 575447 1574.43 1274 1216 364.7
D 8 160 344859 942.2 1274 1216 364.7

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