ASTROSAT CZTI

Data Quality Report

Orbit 39944

Creation date: 2024-06-27T22:10:26.077141
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_044T21_9000005512_39944cztM0_level2.fits modeM0/AS1A12_044T21_9000005512_39944cztM0_level2_quad_clean.evt
Size (bytes)514,255,68090,002,880
Size490.4 MB 85.8 MB
Events in quadrant A3,155,401654,610
Events in quadrant B2,881,250658,096
Events in quadrant C8,442,666439,669
Events in quadrant D4,097,616560,043

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130753
B0125992
C0291272
D0164752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5906240.406366%
B5906490.829665%
C5906208935.370809%
D59063505.926177%

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 7250 5907 18 18 0.25% 0.30%
B 7250 5907 37 37 0.51% 0.63%
C 7250 5907 1897 1897 26.17% 32.11%
D 7250 5907 307 307 4.23% 5.20%

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 516569 3866.73 651 640 133.4
A 13 248 57605 426.93 651 640 133.4
A 2 79 19807 143.65 651 640 133.4
B 5 255 223861 1756.92 643 626 127.1
B 0 230 52962 411.9 643 626 127.1
B 0 183 33549 259.11 643 626 127.1
C 9 54 5971628 45246.62 560 564 132.0
C 15 214 221186 1671.8 560 564 132.0
C 3 233 28267 209.92 560 564 132.0
D 2 249 717217 4697.31 617 600 152.6
D 2 250 362516 2372.3 617 600 152.6
D 13 249 232688 1521.3 617 600 152.6

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