ASTROSAT CZTI

Data Quality Report

Orbit 58454

Creation date: 2026-07-18T06:17:19.299502
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_58454cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58454cztM0_level2_quad_clean.evt
Size (bytes)401,616,00096,537,600
Size383.0 MB 92.1 MB
Events in quadrant A3,094,220639,226
Events in quadrant B4,769,045654,181
Events in quadrant C2,965,496618,649
Events in quadrant D3,547,926572,447

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136122
B0183382
C0133372
D0149982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62941051.668255%
B62945448.643152%
C6294290.460756%
D6294951.509374%

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 7554 6294 36 36 0.48% 0.57%
B 7554 6294 419 419 5.55% 6.66%
C 7554 6295 17 17 0.23% 0.27%
D 7554 6295 80 80 1.06% 1.27%

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 180536 1007.19 713 696 178.6
A 13 248 56956 315.08 713 696 178.6
A 3 14 39396 216.74 713 696 178.6
B 5 172 919947 6191.56 693 671 148.5
B 4 201 664431 4470.59 693 671 148.5
B 5 185 142905 957.98 693 671 148.5
C 6 223 68766 354.75 693 688 191.9
C 14 245 56914 292.99 693 688 191.9
C 4 5 31732 161.77 693 688 191.9
D 8 240 552672 2839.03 680 649 194.4
D 2 153 137548 704.07 680 649 194.4
D 5 173 47152 239.16 680 649 194.4

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