ASTROSAT CZTI

Data Quality Report

Orbit 59351

Creation date: 2026-09-16T15:26:19.040785
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_033T01_9000006608_59351cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59351cztM0_level2_quad_clean.evt
Size (bytes)508,420,80097,306,560
Size484.9 MB 92.8 MB
Events in quadrant A3,548,481633,223
Events in quadrant B4,111,951693,078
Events in quadrant C3,795,264614,264
Events in quadrant D6,839,690534,556

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153822
B0166803
C0156582
D0248882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67571842.723102%
B67561412.087034%
C67571572.323516%
D675779011.691579%

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 7657 6758 106 106 1.38% 1.57%
B 7656 6757 48 48 0.63% 0.71%
C 7657 6758 107 107 1.40% 1.58%
D 7657 6758 755 755 9.86% 11.17%

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 10 251 480973 2699.6 735 718 177.9
A 15 233 182532 1022.01 735 718 177.9
A 3 245 13186 70.08 735 718 177.9
B 5 236 826678 5245.37 731 704 157.5
B 0 186 92870 585.3 731 704 157.5
B 4 236 64830 407.23 731 704 157.5
C 3 233 426346 2174.79 712 705 195.7
C 14 95 423088 2158.14 712 705 195.7
C 12 252 106802 542.1 712 705 195.7
D 12 110 2690969 13636.64 696 665 197.3
D 3 12 881051 4462.51 696 665 197.3
D 1 3 237822 1202.1 696 665 197.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct