ASTROSAT CZTI

Data Quality Report

Orbit 36175

Creation date: 2022-07-19T02:22:47.302324
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/AS1T05_009T03_9000005164_36175cztM0_level2.evt modeM0/AS1T05_009T03_9000005164_36175cztM0_level2_quad_clean.evt
Size (bytes)203,313,60053,988,480
Size193.9 MB 51.5 MB
Events in quadrant A1,244,644357,987
Events in quadrant B1,776,576364,068
Events in quadrant C1,644,885370,002
Events in quadrant D1,306,804350,573

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055221
B070871
C065071
D058191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A268430.111773%
B2684983.651267%
C2684552.049180%
D2684230.856930%

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 2684 2684 0 0 0.00% 0.00%
B 2684 2684 75 75 2.79% 2.79%
C 2684 2684 49 49 1.83% 1.83%
D 2684 2684 17 17 0.63% 0.63%

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 86417 1426.71 296 290 60.4
A 8 144 7545 120.18 296 290 60.4
A 13 254 4979 77.67 296 290 60.4
B 5 172 307241 5432.83 297 290 56.5
B 4 171 281086 4969.91 297 290 56.5
B 4 232 8884 152.11 297 290 56.5
C 15 208 245334 3569.58 293 295 68.6
C 15 214 121271 1762.31 293 295 68.6
C 0 10 97673 1418.54 293 295 68.6
D 13 249 68215 967.94 286 279 70.2
D 10 118 32787 463.17 286 279 70.2
D 13 171 30914 436.48 286 279 70.2

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