ASTROSAT CZTI

Data Quality Report

Orbit 35361

Creation date: 2022-04-13T10:49:20.956637
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/AS1A11_099T01_9000005068_35361cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35361cztM0_level2_quad_clean.evt
Size (bytes)632,016,00047,018,880
Size602.7 MB 44.8 MB
Events in quadrant A3,641,955280,312
Events in quadrant B8,674,847226,380
Events in quadrant C3,102,621279,556
Events in quadrant D3,364,825267,671

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140653
B0294632
C0120982
D0136472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52643426.496960%
B5264237545.117781%
C52641472.792553%
D5264771.462766%

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 7146 5265 286 286 4.00% 5.43%
B 7146 5265 2013 2013 28.17% 38.23%
C 7146 5265 126 126 1.76% 2.39%
D 7146 5265 55 55 0.77% 1.04%

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 15 169 1040136 8073.57 639 628 128.8
A 10 83 107462 829.75 639 628 128.8
A 13 6 12357 91.1 639 628 128.8
B 4 251 5902553 58758.02 521 509 100.4
B 5 236 373634 3714.66 521 509 100.4
B 5 172 261553 2598.83 521 509 100.4
C 0 10 363740 2513.64 623 629 144.5
C 15 214 219204 1513.09 623 629 144.5
C 9 187 58345 399.54 623 629 144.5
D 8 195 535165 3448.42 624 606 155.0
D 10 118 109985 705.6 624 606 155.0
D 2 250 82692 529.53 624 606 155.0

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