ASTROSAT CZTI

Data Quality Report

Orbit 20210420_A10_071T06_9000004324_level2

Creation date: 2025-12-24T22:02:33.928952
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/AS1A10_071T06_9000004324cztM0_level2.fits modeM0/AS1A10_071T06_9000004324cztM0_level2_quad_clean.evt
Size (bytes)363,456,000352,569,600
Size346.6 MB 336.2 MB
Events in quadrant A2,257,9842,181,352
Events in quadrant B2,120,1982,140,407
Events in quadrant C2,164,5242,029,040
Events in quadrant D1,855,4741,719,204

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07720
B07720
C07720
D07720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0789860
B01151560
C0797160
D0981150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A379717742.038398%
B3797112793.368360%
C3797110992.894314%
D3797127997.371415%

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 41531 37972 0 0 0.00% 0.00%
B 41531 37971 0 0 0.00% 0.00%
C 41531 37971 0 0 0.00% 0.00%
D 41531 37758 0 0 0.00% 0.00%

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 29 2178 11.06 588 549 147.3
A 7 110 1764 8.25 588 549 147.3
A 0 30 1700 7.81 588 549 147.3
B 2 9 1682 9.91 559 531 116.1
B 5 232 1453 7.94 559 531 116.1
B 3 17 1442 7.85 559 531 116.1
C 9 233 1489 6.5 572 532 147.1
C 12 241 1466 6.35 572 532 147.1
C 9 209 1443 6.19 572 532 147.1
D 15 46 1396 6.4 529 480 143.2
D 10 189 1298 5.71 529 480 143.2
D 6 67 1284 5.61 529 480 143.2

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