ASTROSAT CZTI

Data Quality Report

Orbit 36341

Creation date: 2022-06-18T14:36:25.259229
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/AS1C07_001T08_9000005190_36341cztM0_level2.evt modeM0/AS1C07_001T08_9000005190_36341cztM0_level2_quad_clean.evt
Size (bytes)736,764,480135,017,280
Size702.6 MB 128.8 MB
Events in quadrant A4,491,863869,498
Events in quadrant B6,318,332856,733
Events in quadrant C4,728,265871,529
Events in quadrant D6,123,326824,705

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196461
B0250921
C0199931
D0246661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9625290.301299%
B96254825.007792%
C9625250.259740%
D96254174.332468%

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 10967 9626 13 13 0.12% 0.14%
B 10967 9626 414 414 3.77% 4.30%
C 10967 9626 17 17 0.16% 0.18%
D 10967 9626 414 414 3.77% 4.30%

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 10 83 242387 1126.91 1067 1047 214.2
A 9 143 84177 388.17 1067 1047 214.2
A 13 254 17417 76.44 1067 1047 214.2
B 5 172 1105248 5592.65 1037 1008 197.4
B 5 236 470936 2380.05 1037 1008 197.4
B 5 255 222580 1122.2 1037 1008 197.4
C 15 214 405163 1651.93 1049 1055 244.6
C 0 207 140819 571.33 1049 1055 244.6
C 0 10 59184 237.62 1049 1055 244.6
D 12 6 1368761 5451.19 1030 1001 250.9
D 2 153 152757 604.82 1030 1001 250.9
D 2 250 98622 389.07 1030 1001 250.9

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