ASTROSAT CZTI

Data Quality Report

Orbit 41334

Creation date: 2024-06-27T22:27:44.419109
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_037T01_9000005652_41334cztM0_level2.fits modeM0/AS1A12_037T01_9000005652_41334cztM0_level2_quad_clean.evt
Size (bytes)233,873,28065,854,080
Size223.0 MB 62.8 MB
Events in quadrant A2,107,469443,054
Events in quadrant B1,881,697455,020
Events in quadrant C2,196,140415,497
Events in quadrant D2,154,488394,188

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086251
B083671
C090511
D092981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A406060.147783%
B406050.123153%
C40601192.931034%
D4060310.763547%

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 5793 4061 2 2 0.03% 0.05%
B 5793 4061 2 2 0.03% 0.05%
C 5793 4061 116 116 2.00% 2.86%
D 5793 4061 33 33 0.57% 0.81%

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 345832 3771.79 442 432 91.6
A 13 248 18095 192.88 442 432 91.6
A 2 79 17796 189.62 442 432 91.6
B 0 190 71686 829.61 437 425 85.9
B 5 255 61645 712.72 437 425 85.9
B 0 229 23557 269.3 437 425 85.9
C 0 10 367246 3667.58 422 423 100.0
C 15 214 170270 1698.17 422 423 100.0
C 9 54 13672 132.46 422 423 100.0
D 2 120 315431 2936.28 430 419 107.3
D 1 47 51132 472.7 430 419 107.3
D 5 222 50532 467.11 430 419 107.3

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