ASTROSAT CZTI

Data Quality Report

Orbit 13991

Creation date: 2024-06-27T16:48:57.958767
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_075T05_9000002066_13991cztM0_level2.evt modeM0/AS1A04_075T05_9000002066_13991cztM0_level2_quad_clean.evt
Size (bytes)122,114,88031,406,400
Size116.5 MB 30.0 MB
Events in quadrant A845,719211,299
Events in quadrant B902,532214,032
Events in quadrant C831,039208,980
Events in quadrant D1,010,501201,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034342
B036291
C033581
D040441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156070.448718%
B1560120.769231%
C156020.128205%
D1560181.153846%

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 1561 1561 0 0 0.00% 0.00%
B 1561 1561 4 4 0.26% 0.26%
C 1561 1561 0 0 0.00% 0.00%
D 1561 1561 8 8 0.51% 0.51%

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 8 15 21396 474.98 210 206 44.6
A 12 189 5893 127.47 210 206 44.6
A 1 162 4181 89.1 210 206 44.6
B 0 189 36027 849.35 206 202 42.2
B 4 80 14298 334.19 206 202 42.2
B 4 142 13427 313.54 206 202 42.2
C 3 233 49395 1030.31 200 200 47.7
C 13 61 1441 25.99 200 200 47.7
C 3 202 459 5.42 200 200 47.7
D 13 189 96065 1922.13 202 197 49.9
D 8 195 93095 1862.59 202 197 49.9
D 7 80 20696 411.0 202 197 49.9

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