ASTROSAT CZTI

Data Quality Report

Orbit 53430

Creation date: 2025-08-14T12:13:46.786821
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_011T09_9000006494_53430cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53430cztM0_level2_quad_clean.evt
Size (bytes)1,022,031,36075,090,240
Size974.7 MB 71.6 MB
Events in quadrant A5,324,008652,346
Events in quadrant B5,666,211634,487
Events in quadrant C18,174,91441,294
Events in quadrant D8,123,520455,262

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207381
B0218052
C0588901
D0292961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70283925.577689%
B702889812.777462%
C7028664494.536141%
D7028196327.931133%

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 7468 7030 296 296 3.96% 4.21%
B 7468 7030 456 456 6.11% 6.49%
C 7468 7030 6691 6691 89.60% 95.18%
D 7468 7030 1938 1938 25.95% 27.57%

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 63 1358946 7580.65 717 700 179.2
A 15 174 469352 2615.64 717 700 179.2
A 0 8 283751 1579.76 717 700 179.2
B 4 171 1764301 12027.21 689 664 146.6
B 10 254 270171 1837.92 689 664 146.6
B 4 206 187276 1272.61 689 664 146.6
C 7 64 14097622 190927.66 261 259 73.8
C 15 224 1117432 15130.43 261 259 73.8
C 1 241 543678 7359.8 261 259 73.8
D 8 176 5148689 30166.92 601 573 170.7
D 2 153 168082 981.57 601 573 170.7
D 10 172 94420 549.92 601 573 170.7

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