ASTROSAT CZTI

Data Quality Report

Orbit 30740

Creation date: 2024-06-27T20:19:05.169954
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/AS1A10_053T35_9000004438_30740cztM0_level2.evt modeM0/AS1A10_053T35_9000004438_30740cztM0_level2_quad_clean.evt
Size (bytes)387,855,36066,288,960
Size369.9 MB 63.2 MB
Events in quadrant A2,668,382429,136
Events in quadrant B3,568,496430,145
Events in quadrant C2,414,482416,408
Events in quadrant D2,784,798410,790

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110061
B0138411
C0100923
D0111111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4561861.885551%
B4561831.819776%
C4560972.127193%
D4560491.074561%

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 5541 4561 24 24 0.43% 0.53%
B 5541 4561 0 0 0.00% 0.00%
C 5540 4560 3 3 0.05% 0.07%
D 5540 4560 5 5 0.09% 0.11%

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 0 13 446008 3816.3 572 559 116.7
A 13 254 8433 67.46 572 559 116.7
A 8 192 8296 66.29 572 559 116.7
B 6 159 1309863 11913.09 567 554 109.9
B 12 111 13569 118.42 567 554 109.9
B 11 111 12463 108.36 567 554 109.9
C 3 233 113453 859.61 553 558 131.3
C 14 238 94050 711.87 553 558 131.3
C 0 10 32560 243.67 553 558 131.3
D 8 195 608248 4381.55 559 544 138.7
D 2 250 36529 259.45 559 544 138.7
D 2 234 19215 134.62 559 544 138.7

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