ASTROSAT CZTI

Data Quality Report

Orbit 37988

Creation date: 2024-06-27T21:47:01.741766
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/AS1A11_082T01_9000005356_37988cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37988cztM0_level2_quad_clean.evt
Size (bytes)487,192,32079,511,040
Size464.6 MB 75.8 MB
Events in quadrant A4,091,451508,271
Events in quadrant B4,078,716506,641
Events in quadrant C2,851,773515,443
Events in quadrant D3,336,516468,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163573
B0159572
C0120062
D0137542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5847520.889345%
B58472574.395416%
C584780.136822%
D5847821.402429%

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 7340 5848 27 27 0.37% 0.46%
B 7340 5848 178 178 2.43% 3.04%
C 7340 5848 5 5 0.07% 0.09%
D 7340 5848 65 65 0.89% 1.11%

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 15 222 998090 7434.06 661 649 134.2
A 10 83 423034 3148.09 661 649 134.2
A 12 227 44623 327.74 661 649 134.2
B 5 184 433484 3441.16 653 638 125.8
B 0 186 314530 2495.47 653 638 125.8
B 4 171 191124 1514.38 653 638 125.8
C 15 214 251563 1672.6 645 649 150.0
C 14 254 43810 287.71 645 649 150.0
C 0 10 19150 123.33 645 649 150.0
D 1 47 218294 1381.82 642 625 157.5
D 12 233 136082 859.92 642 625 157.5
D 2 250 101644 641.29 642 625 157.5

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