ASTROSAT CZTI

Data Quality Report

Orbit 58434

Creation date: 2026-07-17T10:57:19.769630
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_045T01_9000006590_58434cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58434cztM0_level2_quad_clean.evt
Size (bytes)863,487,360165,663,360
Size823.5 MB 158.0 MB
Events in quadrant A5,467,6841,101,619
Events in quadrant B9,511,8341,116,514
Events in quadrant C8,749,731994,300
Events in quadrant D7,316,282983,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02411
D02400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02502249
B03665548
C03440244
D02993952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118511881.586364%
B118519858.311535%
C118519227.779934%
D118523432.894026%

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 12792 11858 19 19 0.15% 0.16%
B 12791 11857 654 654 5.11% 5.52%
C 12789 11856 692 692 5.41% 5.84%
D 12791 11858 232 232 1.81% 1.96%

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 80 120417 361.26 1321 1286 329.8
A 10 251 57957 171.85 1321 1286 329.8
A 12 114 41138 120.85 1321 1286 329.8
B 5 172 3268769 12055.35 1264 1216 271.0
B 4 201 601215 2213.64 1264 1216 271.0
B 10 247 163355 598.2 1264 1216 271.0
C 15 147 2777389 8090.79 1243 1230 343.1
C 14 245 492524 1431.82 1243 1230 343.1
C 14 254 138030 398.69 1243 1230 343.1
D 11 129 563827 1564.34 1264 1207 359.7
D 8 240 403641 1118.95 1264 1207 359.7
D 5 32 164451 453.89 1264 1207 359.7

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