ASTROSAT CZTI

Data Quality Report

Orbit 57624

Creation date: 2026-05-23T10:09:58.239416
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_9000006576_57624cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57624cztM0_level2_quad_clean.evt
Size (bytes)497,494,08089,562,240
Size474.4 MB 85.4 MB
Events in quadrant A3,295,131597,113
Events in quadrant B3,273,478637,623
Events in quadrant C5,023,882536,227
Events in quadrant D6,301,305472,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144732
B0144592
C0195922
D0233962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6715851.265823%
B67161071.593210%
C67165448.100060%
D6716100414.949375%

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 9157 6999 30 30 0.33% 0.43%
B 9158 7000 18 18 0.20% 0.26%
C 9158 7000 430 430 4.70% 6.14%
D 9158 7000 946 946 10.33% 13.51%

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 14 346599 1868.94 747 729 185.1
A 7 160 35300 186.81 747 729 185.1
A 4 249 17962 93.12 747 729 185.1
B 4 80 63594 404.68 739 712 155.4
B 10 247 49800 315.91 739 712 155.4
B 4 201 48244 305.89 739 712 155.4
C 15 224 1489530 7776.7 706 700 191.4
C 12 2 675934 3526.99 706 700 191.4
C 14 254 19747 99.49 706 700 191.4
D 8 160 1081975 5588.79 676 643 193.5
D 2 62 1067372 5513.32 676 643 193.5
D 15 142 931061 4808.81 676 643 193.5

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