ASTROSAT CZTI

Data Quality Report

Orbit 29527

Creation date: 2024-06-27T20:05:03.792232
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/AS1A10_073T07_9000004254_29527cztM0_level2.evt modeM0/AS1A10_073T07_9000004254_29527cztM0_level2_quad_clean.evt
Size (bytes)1,152,869,760175,106,880
Size1.1 GB 167.0 MB
Events in quadrant A5,302,4311,166,866
Events in quadrant B5,525,2911,214,191
Events in quadrant C5,438,2441,168,343
Events in quadrant D17,941,0021,024,931

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225362
B0231962
C0226572
D06064611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10521840.798403%
B105221081.026421%
C105222542.413990%
D10520230621.920152%

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 12931 10523 26 26 0.20% 0.25%
B 12932 10524 17 17 0.13% 0.16%
C 12932 10524 0 0 0.00% 0.00%
D 12931 10523 2754 2754 21.30% 26.17%

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 13 164440 610.06 1331 1306 267.4
A 13 254 19548 68.22 1331 1306 267.4
A 3 137 12531 41.98 1331 1306 267.4
B 5 255 145465 567.76 1338 1305 253.9
B 10 245 77521 300.17 1338 1305 253.9
B 0 190 33689 127.54 1338 1305 253.9
C 14 238 244573 810.0 1296 1311 300.3
C 3 233 54057 175.63 1296 1311 300.3
C 14 254 52929 171.88 1296 1311 300.3
D 8 195 12477477 42746.68 1232 1204 291.9
D 7 238 251935 859.06 1232 1204 291.9
D 7 223 246723 841.2 1232 1204 291.9

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