ASTROSAT CZTI

Data Quality Report

Orbit 55414

Creation date: 2025-12-25T17:54:31.018698
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_099T01_9000006536_55414cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55414cztM0_level2_quad_clean.evt
Size (bytes)398,707,20085,273,920
Size380.2 MB 81.3 MB
Events in quadrant A2,692,419569,889
Events in quadrant B3,141,413600,663
Events in quadrant C2,825,477534,176
Events in quadrant D5,635,175460,404

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126031
B0138341
C0131231
D0209391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5965941.575859%
B59651823.051132%
C59661121.877305%
D596679413.308750%

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 6945 5966 25 25 0.36% 0.42%
B 6945 5966 82 82 1.18% 1.37%
C 6946 5967 64 64 0.92% 1.07%
D 6946 5967 656 656 9.44% 10.99%

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 0 8 99118 620.67 632 615 158.7
A 4 159 53610 333.92 632 615 158.7
A 15 32 39028 242.04 632 615 158.7
B 5 185 558219 4245.56 616 595 131.3
B 5 172 106458 806.0 616 595 131.3
B 12 111 16068 117.81 616 595 131.3
C 13 3 348985 2077.17 606 598 167.7
C 10 19 37762 221.58 606 598 167.7
C 15 157 36303 212.88 606 598 167.7
D 11 129 2501435 15211.95 579 552 164.4
D 2 249 333100 2022.76 579 552 164.4
D 10 181 112577 681.4 579 552 164.4

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