ASTROSAT CZTI

Data Quality Report

Orbit 59249

Creation date: 2026-09-09T19:13:49.945007
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_59249cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59249cztM0_level2_quad_clean.evt
Size (bytes)528,249,600100,048,320
Size503.8 MB 95.4 MB
Events in quadrant A3,172,794669,003
Events in quadrant B4,018,389699,628
Events in quadrant C3,275,479637,864
Events in quadrant D8,548,840539,216

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144432
B0168082
C0146132
D0302745

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69381111.599885%
B69383414.914961%
C6938821.181897%
D693797814.098313%

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 7763 6939 5 5 0.06% 0.07%
B 7763 6939 142 142 1.83% 2.05%
C 7763 6939 7 7 0.09% 0.10%
D 7762 6938 985 985 12.69% 14.20%

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 15 233 40291 205.58 784 763 192.3
A 3 14 38904 198.37 784 763 192.3
A 0 24 27534 139.23 784 763 192.3
B 4 236 584744 3533.38 761 731 165.3
B 4 201 252024 1520.37 761 731 165.3
B 10 247 51583 307.66 761 731 165.3
C 12 252 152741 733.53 759 753 207.2
C 6 13 62867 299.78 759 753 207.2
C 14 254 37728 178.45 759 753 207.2
D 12 110 4993677 24051.96 730 701 207.6
D 3 12 245297 1178.26 730 701 207.6
D 8 160 120875 578.9 730 701 207.6

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