ASTROSAT CZTI

Data Quality Report

Orbit 54226

Creation date: 2025-10-06T19:10:08.266479
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_004T08_9000006514_54226cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54226cztM0_level2_quad_clean.evt
Size (bytes)697,982,40071,772,480
Size665.6 MB 68.4 MB
Events in quadrant A6,412,786490,717
Events in quadrant B4,281,435649,508
Events in quadrant C3,064,227568,469
Events in quadrant D11,601,79737,494

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231521
B0169361
C0136801
D0386982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6115142723.336059%
B61162754.496403%
C6116981.602354%
D6115573193.720360%

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 7230 6116 1184 1184 16.38% 19.36%
B 7231 6117 105 105 1.45% 1.72%
C 7231 6117 58 58 0.80% 0.95%
D 7230 6116 2848 2848 39.39% 46.57%

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 12 17 3334852 22871.95 585 571 145.8
A 12 194 417464 2859.73 585 571 145.8
A 15 174 127081 867.81 585 571 145.8
B 5 236 868223 6229.89 643 620 139.3
B 4 171 227297 1627.67 643 620 139.3
B 8 234 217413 1556.7 643 620 139.3
C 12 2 190067 1079.47 630 624 175.5
C 13 3 88246 499.28 630 624 175.5
C 15 215 79238 447.95 630 624 175.5
D 8 176 10878894 313423.5 117 112 34.7
D 8 160 64961 1868.33 117 112 34.7
D 2 172 48467 1393.13 117 112 34.7

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