ASTROSAT CZTI

Data Quality Report

Orbit 59169

Creation date: 2026-09-04T09:49:40.808589
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/AS1T05_271T01_9000006604_59169cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59169cztM0_level2_quad_clean.evt
Size (bytes)1,947,643,200306,587,520
Size1.8 GB 292.4 MB
Events in quadrant A10,224,0312,224,851
Events in quadrant B11,406,1642,376,212
Events in quadrant C11,190,1852,138,449
Events in quadrant D37,583,2331,037,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460316
B0492956
C0491046
D01268716

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04480
B04480
C04480
D04480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A218641010.461947%
B218653551.623599%
C218652611.193689%
D218651094950.075463%

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 26359 21867 38 38 0.14% 0.17%
B 26360 21866 113 113 0.43% 0.52%
C 26360 21868 207 207 0.79% 0.95%
D 26360 21867 9764 9764 37.04% 44.65%

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 357087 597.06 2429 2371 594.1
A 15 233 306880 512.55 2429 2371 594.1
A 10 251 126374 208.72 2429 2371 594.1
B 4 171 1105009 2176.79 2409 2316 506.6
B 5 248 227432 444.39 2409 2316 506.6
B 4 236 225572 440.72 2409 2316 506.6
C 5 250 820454 1255.12 2379 2358 651.8
C 14 254 285940 435.07 2379 2358 651.8
C 12 252 244742 371.86 2379 2358 651.8
D 12 1 17668690 39770.5 1578 1505 444.2
D 2 31 5477693 12327.42 1578 1505 444.2
D 11 129 3524829 7931.33 1578 1505 444.2

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