ASTROSAT CZTI

Data Quality Report

Orbit 22871

Creation date: 2024-06-27T18:46:52.343885
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_049T01_9000003380_22871cztM0_level2.evt modeM0/AS1A07_049T01_9000003380_22871cztM0_level2_quad_clean.evt
Size (bytes)110,799,36024,364,800
Size105.7 MB 23.2 MB
Events in quadrant A789,008159,492
Events in quadrant B786,098163,871
Events in quadrant C773,263153,353
Events in quadrant D904,636151,652

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031461
B031501
C031411
D036414

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146690.613915%
B1466100.682128%
C1466261.773533%
D1465171.160410%

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 1466 1466 0 0 0.00% 0.00%
B 1466 1466 0 0 0.00% 0.00%
C 1466 1466 0 0 0.00% 0.00%
D 1466 1466 1 1 0.07% 0.07%

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 6 16 2775 60.11 203 200 42.8
A 13 254 2158 45.71 203 200 42.8
A 0 226 1778 36.84 203 200 42.8
B 12 111 4677 110.35 200 195 40.6
B 11 111 4253 99.91 200 195 40.6
B 14 111 3777 88.19 200 195 40.6
C 14 238 31404 687.96 187 188 45.4
C 0 10 7179 154.07 187 188 45.4
C 10 22 5538 117.91 187 188 45.4
D 7 238 119218 2461.46 191 186 48.4
D 13 153 24682 506.55 191 186 48.4
D 12 233 12288 250.26 191 186 48.4

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