ASTROSAT CZTI

Data Quality Report

Orbit 39742

Creation date: 2024-06-27T22:08:28.061764
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/AS1A12_022T01_9000005494_39742cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39742cztM0_level2_quad_clean.evt
Size (bytes)411,442,56096,384,960
Size392.4 MB 91.9 MB
Events in quadrant A3,320,088657,689
Events in quadrant B2,715,858672,086
Events in quadrant C3,023,274643,815
Events in quadrant D5,707,562528,288

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138373
B0122762
C0128092
D0211172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5957520.872923%
B5957120.201444%
C5957170.285379%
D595782913.916401%

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 7240 5958 33 33 0.46% 0.55%
B 7240 5958 1 1 0.01% 0.02%
C 7240 5958 7 7 0.10% 0.12%
D 7240 5958 745 745 10.29% 12.50%

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 476566 3608.78 644 630 131.9
A 15 174 158466 1196.79 644 630 131.9
A 13 248 118520 893.9 644 630 131.9
B 4 170 73127 577.19 645 626 125.6
B 5 255 31287 244.09 645 626 125.6
B 0 190 29108 226.75 645 626 125.6
C 15 214 259934 1765.67 630 632 146.9
C 15 208 143934 975.79 630 632 146.9
C 9 187 142324 964.83 630 632 146.9
D 12 227 2459467 16850.44 591 575 145.9
D 12 233 344933 2359.84 591 575 145.9
D 13 249 208010 1421.52 591 575 145.9

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