ASTROSAT CZTI

Data Quality Report

Orbit 56767

Creation date: 2026-03-26T18:48:23.440248
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_9000006560_56767cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56767cztM0_level2_quad_clean.evt
Size (bytes)420,526,08089,717,760
Size401.0 MB 85.6 MB
Events in quadrant A3,613,678585,940
Events in quadrant B4,850,055598,120
Events in quadrant C3,492,847563,815
Events in quadrant D3,131,575539,828

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149211
B0186861
C0148492
D0135251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61472694.376118%
B614762010.086221%
C61472003.253620%
D6147961.561737%

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 7207 6148 152 152 2.11% 2.47%
B 7207 6148 299 299 4.15% 4.86%
C 7207 6148 166 166 2.30% 2.70%
D 7207 6148 32 32 0.44% 0.52%

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 3 62 499754 3027.51 661 645 164.9
A 3 14 304679 1844.22 661 645 164.9
A 10 251 207020 1251.83 661 645 164.9
B 4 206 965554 7105.9 629 607 135.8
B 5 185 763309 5616.56 629 607 135.8
B 0 152 211431 1552.51 629 607 135.8
C 14 96 379292 2154.48 641 633 175.8
C 15 230 233087 1322.61 641 633 175.8
C 13 3 107172 606.18 641 633 175.8
D 3 12 144983 784.89 650 622 183.9
D 5 113 111233 601.39 650 622 183.9
D 2 249 95113 513.75 650 622 183.9

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