ASTROSAT CZTI

Data Quality Report

Orbit 59285

Creation date: 2026-09-12T04:11:32.529887
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_021T06_9000006606_59285cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59285cztM0_level2_quad_clean.evt
Size (bytes)573,629,76093,934,080
Size547.1 MB 89.6 MB
Events in quadrant A3,911,402640,568
Events in quadrant B4,038,779684,111
Events in quadrant C3,734,887615,697
Events in quadrant D9,036,834444,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165141
B0167121
C0160491
D0314801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65952283.457165%
B65953585.428355%
C65952563.881729%
D6595182127.611827%

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 7550 6596 203 203 2.69% 3.08%
B 7550 6595 218 218 2.89% 3.31%
C 7550 6596 186 186 2.46% 2.82%
D 7550 6596 1349 1349 17.87% 20.45%

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 7 64 1022312 5966.74 692 674 171.2
A 10 251 95382 553.13 692 674 171.2
A 3 11 31987 182.88 692 674 171.2
B 4 236 897714 6167.42 689 665 145.4
B 4 201 108671 742.57 689 665 145.4
B 0 157 59264 402.88 689 665 145.4
C 12 252 774217 4138.51 685 677 186.9
C 14 96 94769 503.4 685 677 186.9
C 7 64 44879 236.48 685 677 186.9
D 12 110 4218945 23779.23 621 595 177.4
D 2 249 1462916 8243.24 621 595 177.4
D 8 240 391018 2200.85 621 595 177.4

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