ASTROSAT CZTI

Data Quality Report

Orbit 38848

Creation date: 2024-06-27T21:57:12.912581
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_077T06_9000005408_38848cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38848cztM0_level2_quad_clean.evt
Size (bytes)401,731,20093,487,680
Size383.1 MB 89.2 MB
Events in quadrant A3,057,936650,651
Events in quadrant B2,927,076661,073
Events in quadrant C2,862,504627,848
Events in quadrant D5,585,307497,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126653
B0124932
C0119602
D0205012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5626280.497689%
B5626791.404195%
C5626310.551013%
D562795817.025058%

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 7298 5627 13 13 0.18% 0.23%
B 7298 5627 35 35 0.48% 0.62%
C 7298 5627 19 19 0.26% 0.34%
D 7298 5627 790 790 10.82% 14.04%

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 432355 3287.99 646 631 131.3
A 13 248 68095 513.8 646 631 131.3
A 9 143 49715 373.82 646 631 131.3
B 5 184 236490 1895.24 641 625 124.5
B 15 85 63967 508.97 641 625 124.5
B 4 251 58047 461.4 641 625 124.5
C 15 214 233490 1574.1 633 636 147.9
C 14 254 114736 771.32 633 636 147.9
C 0 207 31561 209.05 633 636 147.9
D 2 250 1897807 13519.6 577 560 140.3
D 12 235 522628 3720.21 577 560 140.3
D 5 222 329459 2343.7 577 560 140.3

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