ASTROSAT CZTI

Data Quality Report

Orbit 20190307_A05_104T03_9000002770_level2

Creation date: 2025-11-28T14:47:58.854213
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/AS1A05_104T03_9000002770cztM0_level2.fits modeM0/AS1A05_104T03_9000002770cztM0_level2_quad_clean.evt
Size (bytes)303,255,360273,260,160
Size289.2 MB 260.6 MB
Events in quadrant A1,825,4461,569,318
Events in quadrant B1,773,5201,593,929
Events in quadrant C1,806,8201,527,541
Events in quadrant D1,557,4621,363,757

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0669190
B0674450
C0692640
D0822510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06560
B06560
C06560
D06560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A323134251.315260%
B323135231.618544%
C323136872.126079%
D3231312903.992201%

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 34103 32311 0 0 0.00% 0.00%
B 34103 32309 0 0 0.00% 0.00%
C 34103 32311 0 0 0.00% 0.00%
D 34103 32295 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 7 110 1507 8.88 475 444 119.8
A 0 29 1470 8.57 475 444 119.8
A 15 236 1390 7.9 475 444 119.8
B 2 9 1424 10.29 467 443 95.3
B 3 17 1233 8.29 467 443 95.3
B 5 128 1198 7.92 467 443 95.3
C 12 241 1251 6.45 477 444 125.0
C 12 249 1249 6.44 477 444 125.0
C 3 126 1229 6.28 477 444 125.0
D 10 190 1192 6.51 444 405 120.9
D 3 14 1164 6.28 444 405 120.9
D 3 31 1140 6.08 444 405 120.9

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