ASTROSAT CZTI

Data Quality Report

Orbit 24580

Creation date: 2024-06-27T19:07:31.467173
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/AS1T03_183T01_9000003610_24580cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24580cztM0_level2_quad_clean.evt
Size (bytes)827,208,000115,007,040
Size788.9 MB 109.7 MB
Events in quadrant A3,174,955833,253
Events in quadrant B3,765,310842,297
Events in quadrant C13,613,148586,509
Events in quadrant D4,056,755763,593

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136362
B0153862
C0448783
D0165252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6530500.765697%
B65303034.640123%
C6529474572.675754%
D6529470.719865%

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 7600 6531 0 0 0.00% 0.00%
B 7600 6531 142 142 1.87% 2.17%
C 7599 6529 4077 4077 53.65% 62.44%
D 7599 6530 22 22 0.29% 0.34%

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 13 254 10590 59.77 822 807 163.7
A 3 137 7284 39.57 822 807 163.7
A 0 226 7082 38.34 822 807 163.7
B 3 64 592321 3902.59 808 789 151.6
B 12 111 17798 112.22 808 789 151.6
B 11 111 15623 97.87 808 789 151.6
C 7 247 11030987 77981.15 622 626 141.4
C 14 238 96621 678.65 622 626 141.4
C 7 226 32468 225.11 622 626 141.4
D 8 195 870141 4634.44 781 759 187.6
D 1 52 121983 646.21 781 759 187.6
D 1 255 50502 265.17 781 759 187.6

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