ASTROSAT CZTI

Data Quality Report

Orbit 53208

Creation date: 2025-07-30T06:07:30.589658
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/AS1C09_011T06_9000006490_53208cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53208cztM0_level2_quad_clean.evt
Size (bytes)759,274,56080,006,400
Size724.1 MB 76.3 MB
Events in quadrant A2,924,046626,953
Events in quadrant B3,173,733676,097
Events in quadrant C6,258,570546,688
Events in quadrant D15,260,633132,585

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135003
B0141632
C0229622
D0496332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6303630.999524%
B63031091.729335%
C630382913.152467%
D6304502179.647843%

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 7508 6304 21 21 0.28% 0.33%
B 7508 6304 35 35 0.47% 0.56%
C 7508 6304 691 691 9.20% 10.96%
D 7509 6305 5235 5235 69.72% 83.03%

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 7 112 60055 356.09 662 646 166.8
A 5 240 41681 245.96 662 646 166.8
A 0 8 40039 236.11 662 646 166.8
B 2 249 129091 923.32 661 638 139.1
B 10 247 122835 878.35 661 638 139.1
B 4 81 92669 661.52 661 638 139.1
C 15 224 1539712 8972.11 618 615 171.5
C 15 198 1178793 6868.14 618 615 171.5
C 15 165 387710 2256.56 618 615 171.5
D 15 125 12260329 111508.16 374 356 109.9
D 12 3 310443 2820.33 374 356 109.9
D 11 176 303176 2754.24 374 356 109.9

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