ASTROSAT CZTI

Data Quality Report

Orbit 58165

Creation date: 2026-06-30T07:48:11.298990
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_042T02_9000006586_58165cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58165cztM0_level2_quad_clean.evt
Size (bytes)631,805,76084,487,680
Size602.5 MB 80.6 MB
Events in quadrant A2,989,056639,645
Events in quadrant B11,620,673332,240
Events in quadrant C3,158,433607,121
Events in quadrant D5,127,009537,407

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132211
B0389461
C0139021
D0195901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6334951.499842%
B6333362557.239855%
C6333811.279015%
D63345318.383328%

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 7409 6334 2 2 0.03% 0.03%
B 7407 6332 3222 3222 43.50% 50.88%
C 7408 6333 10 10 0.13% 0.16%
D 7409 6334 473 473 6.38% 7.47%

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 12 3 37495 203.83 728 709 180.5
A 2 143 36852 200.26 728 709 180.5
A 13 248 27472 148.29 728 709 180.5
B 10 128 8320652 73766.38 522 503 112.8
B 2 249 716298 6346.23 522 503 112.8
B 5 185 86322 760.87 522 503 112.8
C 12 252 118721 619.93 697 690 190.4
C 14 96 104741 546.51 697 690 190.4
C 14 245 85467 445.27 697 690 190.4
D 12 110 1449875 7525.34 682 654 192.6
D 12 128 389778 2020.6 682 654 192.6
D 8 160 197095 1020.06 682 654 192.6

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