ASTROSAT CZTI

Data Quality Report

Orbit 20200225_A07_091T10_9000003532_level2

Creation date: 2025-12-09T14:49:47.851049
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/AS1A07_091T10_9000003532cztM0_level2.fits modeM0/AS1A07_091T10_9000003532cztM0_level2_quad_clean.evt
Size (bytes)134,282,880103,481,280
Size128.1 MB 98.7 MB
Events in quadrant A830,786580,204
Events in quadrant B794,838578,997
Events in quadrant C817,812552,998
Events in quadrant D718,368515,384

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274490
B0277540
C0282560
D0294500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13104680.518926%
B13104920.702076%
C131041641.251526%
D131041160.885226%

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 15228 13103 0 0 0.00% 0.00%
B 15228 13103 0 0 0.00% 0.00%
C 15228 13103 0 0 0.00% 0.00%
D 15228 13103 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 29 823 11.35 216 203 54.6
A 7 110 664 8.44 216 203 54.6
A 0 30 646 8.11 216 203 54.6
B 2 9 670 10.56 210 201 44.4
B 2 8 547 7.79 210 201 44.4
B 3 80 527 7.34 210 201 44.4
C 9 209 602 7.03 216 203 56.7
C 12 241 583 6.7 216 203 56.7
C 3 234 578 6.61 216 203 56.7
D 3 14 520 5.94 205 187 56.0
D 6 231 518 5.91 205 187 56.0
D 4 160 505 5.68 205 187 56.0

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