ASTROSAT CZTI

Data Quality Report

Orbit 57233

Creation date: 2026-04-30T14:04:34.557100
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_070T08_9000006568_57233cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57233cztM0_level2_quad_clean.evt
Size (bytes)432,682,56089,616,960
Size412.6 MB 85.5 MB
Events in quadrant A3,283,253591,115
Events in quadrant B3,909,931627,157
Events in quadrant C5,237,287526,204
Events in quadrant D3,087,914522,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142182
B0161382
C0200672
D0140062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6405640.999219%
B64062914.542616%
C64065138.008117%
D6406430.671246%

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 7889 6690 31 31 0.39% 0.46%
B 7890 6691 169 169 2.14% 2.53%
C 7890 6689 437 437 5.54% 6.53%
D 7890 6691 51 51 0.65% 0.76%

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 4 13 208239 1218.47 687 671 170.4
A 7 64 162566 950.36 687 671 170.4
A 0 128 131990 770.87 687 671 170.4
B 10 16 793826 5583.57 670 645 142.1
B 7 252 236196 1658.15 670 645 142.1
B 10 247 47582 330.41 670 645 142.1
C 15 224 2576030 14734.87 636 629 174.8
C 14 254 56642 320.47 636 629 174.8
C 14 67 36588 205.74 636 629 174.8
D 9 102 133492 718.02 650 621 185.1
D 3 12 109078 586.09 650 621 185.1
D 8 240 94573 507.71 650 621 185.1

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