ASTROSAT CZTI

Data Quality Report

Orbit 13454

Creation date: 2024-06-27T16:41:02.561408
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/AS1A04_103T01_9000001988_13454cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13454cztM0_level2_quad_clean.evt
Size (bytes)857,594,880174,300,480
Size817.9 MB 166.2 MB
Events in quadrant A6,020,3111,101,118
Events in quadrant B6,192,9211,125,134
Events in quadrant C6,687,4831,093,800
Events in quadrant D6,172,5861,042,335

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269594
B0272193
C0287233
D0279933

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13265530.399548%
B13265990.746325%
C132652381.794195%
D132651020.768941%

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 14806 13267 1 1 0.01% 0.01%
B 14806 13268 4 4 0.03% 0.03%
C 14806 13267 153 153 1.03% 1.15%
D 14806 13267 47 47 0.32% 0.35%

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 1 162 25809 76.92 1553 1519 315.8
A 0 226 13653 38.43 1553 1519 315.8
A 12 194 11755 32.42 1553 1519 315.8
B 0 214 55123 181.27 1553 1513 295.8
B 12 111 35770 115.83 1553 1513 295.8
B 3 209 32643 105.26 1553 1513 295.8
C 10 9 654733 1869.82 1511 1518 349.3
C 3 233 121151 342.45 1511 1518 349.3
C 14 234 12685 31.97 1511 1518 349.3
D 13 249 323454 897.8 1499 1453 358.7
D 8 195 81921 224.36 1499 1453 358.7
D 2 234 49343 133.52 1499 1453 358.7

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