ASTROSAT CZTI

Data Quality Report

Orbit 20200207_A07_024T04_9000003484_level2

Creation date: 2025-12-09T04:46:05.684438
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_024T04_9000003484cztM0_level2.fits modeM0/AS1A07_024T04_9000003484cztM0_level2_quad_clean.evt
Size (bytes)98,925,12089,893,440
Size94.3 MB 85.7 MB
Events in quadrant A602,446519,345
Events in quadrant B573,278513,502
Events in quadrant C586,384497,987
Events in quadrant D498,866456,061

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230370
B0247600
C0227460
D0326570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10604870.820445%
B106022852.688172%
C106041441.357978%
D106037947.488447%

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 11578 10602 0 0 0.00% 0.00%
B 11579 10600 0 0 0.00% 0.00%
C 11579 10602 0 0 0.00% 0.00%
D 11579 10602 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 29 583 10.34 156 146 42.3
A 7 110 472 7.71 156 146 42.3
A 14 79 471 7.69 156 146 42.3
B 2 9 431 8.82 151 143 32.6
B 5 128 391 7.6 151 143 32.6
B 14 254 385 7.41 151 143 32.6
C 9 242 410 6.48 155 144 41.1
C 3 235 402 6.28 155 144 41.1
C 9 233 401 6.26 155 144 41.1
D 4 246 400 6.85 142 128 39.7
D 6 231 360 5.84 142 128 39.7
D 3 14 358 5.79 142 128 39.7

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