ASTROSAT CZTI

Data Quality Report

Orbit 55430

Creation date: 2025-12-26T20:12:02.269732
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_55430cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55430cztM0_level2_quad_clean.evt
Size (bytes)477,976,32085,155,840
Size455.8 MB 81.2 MB
Events in quadrant A3,103,963582,838
Events in quadrant B2,897,638620,432
Events in quadrant C2,834,019547,700
Events in quadrant D8,390,731408,367

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135601
B0131821
C0130931
D0290951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59982083.467823%
B59981883.134378%
C59991622.700450%
D5999166927.821304%

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 7098 5999 101 101 1.42% 1.68%
B 7098 5999 34 34 0.48% 0.57%
C 7099 6000 66 66 0.93% 1.10%
D 7099 6000 1397 1397 19.68% 23.28%

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 78 243647 1532.69 641 624 158.6
A 15 32 233856 1470.94 641 624 158.6
A 4 159 70314 439.52 641 624 158.6
B 12 32 145544 1062.04 631 608 136.5
B 5 185 103241 752.06 631 608 136.5
B 10 247 46023 332.78 631 608 136.5
C 12 250 186330 1095.75 620 612 169.5
C 13 3 118582 696.03 620 612 169.5
C 12 252 52906 308.54 620 612 169.5
D 11 129 5664335 35635.63 562 537 158.9
D 8 160 195477 1226.53 562 537 158.9
D 12 128 112094 701.9 562 537 158.9

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