ASTROSAT CZTI

Data Quality Report

Orbit 37239

Creation date: 2024-06-27T21:37:18.505898
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_123T11_9000005286_37239cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37239cztM0_level2_quad_clean.evt
Size (bytes)771,068,160101,041,920
Size735.3 MB 96.4 MB
Events in quadrant A6,079,823624,082
Events in quadrant B5,795,834618,611
Events in quadrant C4,705,313606,936
Events in quadrant D6,156,861579,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240473
B0233852
C0196552
D0246752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90804805.286344%
B90801731.905286%
C9080780.859031%
D90803944.339207%

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 10452 9081 394 394 3.77% 4.34%
B 10452 9081 61 61 0.58% 0.67%
C 10452 9081 55 55 0.53% 0.61%
D 10451 9080 304 304 2.91% 3.35%

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 15 237 1510288 7291.53 1021 1000 207.0
A 10 83 382030 1840.8 1021 1000 207.0
A 13 248 103199 493.73 1021 1000 207.0
B 0 190 438239 2195.43 1028 1001 199.2
B 0 155 403422 2020.61 1028 1001 199.2
B 4 232 165546 826.2 1028 1001 199.2
C 15 214 380884 1636.86 1002 1011 232.1
C 0 10 139500 596.75 1002 1011 232.1
C 14 254 87913 374.46 1002 1011 232.1
D 2 249 984697 4036.85 997 970 243.7
D 13 249 217028 886.62 997 970 243.7
D 13 171 196280 801.48 997 970 243.7

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