ASTROSAT CZTI

Data Quality Report

Orbit 19752

Creation date: 2024-06-27T18:06:32.278394
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/AS1C04_001T01_9000002948_19752cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19752cztM0_level2_quad_clean.evt
Size (bytes)516,142,080120,657,600
Size492.2 MB 115.1 MB
Events in quadrant A2,983,799820,934
Events in quadrant B3,458,357825,273
Events in quadrant C3,316,048798,462
Events in quadrant D5,428,329752,348

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133421
B0147981
C0140081
D0207421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6560310.472561%
B65611091.661332%
C6561811.234568%
D65614566.950160%

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 7435 6561 0 0 0.00% 0.00%
B 7436 6561 46 46 0.62% 0.70%
C 7436 6561 2 2 0.03% 0.03%
D 7436 6561 332 332 4.46% 5.06%

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 0 226 6764 38.29 773 756 156.9
A 13 254 6520 36.74 773 756 156.9
A 3 137 6007 33.47 773 756 156.9
B 7 220 377484 2563.72 768 749 146.9
B 0 197 29060 192.66 768 749 146.9
B 12 111 17165 111.71 768 749 146.9
C 3 233 286509 1643.53 746 750 173.9
C 14 238 117554 671.79 746 750 173.9
C 13 61 5361 26.52 746 750 173.9
D 1 52 2050347 11471.3 730 708 178.7
D 12 233 300847 1679.8 730 708 178.7
D 7 38 110616 615.12 730 708 178.7

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