ASTROSAT CZTI

Data Quality Report

Orbit 59065

Creation date: 2026-08-28T18:07:53.058696
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_004T02_9000006600_59065cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59065cztM0_level2_quad_clean.evt
Size (bytes)852,344,64078,148,800
Size812.9 MB 74.5 MB
Events in quadrant A3,179,088679,401
Events in quadrant B4,135,225689,803
Events in quadrant C6,837,760535,912
Events in quadrant D16,887,2321,508

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140722
B0168342
C0248584
D0545632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6592420.637136%
B65924296.507888%
C6591132820.148688%
D6591657899.802761%

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 7827 6593 17 17 0.22% 0.26%
B 7827 6593 314 314 4.01% 4.76%
C 7826 6592 1018 1018 13.01% 15.44%
D 7825 6590 6310 6310 80.64% 95.75%

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 96532 527.94 745 727 181.5
A 15 233 58246 316.96 745 727 181.5
A 10 251 39128 211.61 745 727 181.5
B 5 185 1067785 7007.37 722 698 152.3
B 4 236 58592 380.18 722 698 152.3
B 4 171 31976 205.4 722 698 152.3
C 15 219 4103547 22849.68 653 647 179.6
C 6 223 78650 434.41 653 647 179.6
C 12 252 45120 247.68 653 647 179.6
D 12 1 15902353 560998.59 94 89 28.3
D 6 239 336595 11871.23 94 89 28.3
D 2 62 191111 6738.86 94 89 28.3

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