ASTROSAT CZTI

Data Quality Report

Orbit 59223

Creation date: 2026-09-07T23:23:11.480080
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_59223cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59223cztM0_level2_quad_clean.evt
Size (bytes)522,840,96097,574,400
Size498.6 MB 93.1 MB
Events in quadrant A3,497,430664,716
Events in quadrant B3,154,554717,493
Events in quadrant C6,107,238571,693
Events in quadrant D6,096,044552,249

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148912
B0137982
C0226272
D0226882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64251742.708171%
B64251111.727626%
C642584913.214008%
D64256119.509728%

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 7565 6425 87 87 1.15% 1.35%
B 7565 6425 23 23 0.30% 0.36%
C 7565 6425 653 653 8.63% 10.16%
D 7565 6425 521 521 6.89% 8.11%

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 187150 1023.1 742 723 182.2
A 0 24 176223 963.13 742 723 182.2
A 10 251 162904 890.04 742 723 182.2
B 4 201 62697 391.3 737 710 158.4
B 10 247 56500 352.18 737 710 158.4
B 4 236 48140 299.41 737 710 158.4
C 5 250 1591405 8422.44 696 690 188.9
C 12 252 499866 2643.01 696 690 188.9
C 15 147 423726 2239.87 696 690 188.9
D 12 110 1772231 8972.67 701 669 197.4
D 7 238 842420 4263.33 701 669 197.4
D 11 129 466068 2357.17 701 669 197.4

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