ASTROSAT CZTI

Data Quality Report

Orbit 58350

Creation date: 2026-07-11T06:10:36.724119
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_044T03_9000006588_58350cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58350cztM0_level2_quad_clean.evt
Size (bytes)381,784,32092,194,560
Size364.1 MB 87.9 MB
Events in quadrant A3,087,038597,187
Events in quadrant B4,277,032625,905
Events in quadrant C3,246,341575,706
Events in quadrant D3,020,113543,230

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138752
B0171513
C0145162
D0138102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6448560.868486%
B64472764.281061%
C64471231.907864%
D6447530.822088%

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 7671 6632 24 24 0.31% 0.36%
B 7670 6631 182 182 2.37% 2.74%
C 7670 6631 86 86 1.12% 1.30%
D 7670 6631 17 17 0.22% 0.26%

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 221221 1263.75 700 682 174.5
A 13 248 37454 210.71 700 682 174.5
A 12 114 22575 125.45 700 682 174.5
B 10 128 705777 4774.28 689 662 147.7
B 5 185 542872 3671.26 689 662 147.7
B 0 156 52049 347.93 689 662 147.7
C 9 38 296417 1562.8 680 674 189.2
C 4 5 153512 807.64 680 674 189.2
C 12 252 40319 209.5 680 674 189.2
D 11 129 181618 937.78 680 649 193.0
D 3 12 80226 412.37 680 649 193.0
D 5 173 47622 243.41 680 649 193.0

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