ASTROSAT CZTI

Data Quality Report

Orbit 35984

Creation date: 2022-07-19T00:09:57.578296
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/AS1A11_050T19_9000005156_35984cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35984cztM0_level2_quad_clean.evt
Size (bytes)790,038,72087,929,280
Size753.4 MB 83.9 MB
Events in quadrant A2,559,904710,125
Events in quadrant B13,228,338260,938
Events in quadrant C3,631,034692,059
Events in quadrant D4,161,409638,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107593
B0428412
C0139602
D0156132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511650.097733%
B5116511099.882721%
C51162825.512119%
D51165059.870993%

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 7058 5117 0 0 0.00% 0.00%
B 7057 5115 4989 4989 70.70% 97.54%
C 7058 5117 216 216 3.06% 4.22%
D 7058 5117 438 438 6.21% 8.56%

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 163338 1312.82 617 605 124.0
A 13 254 8253 61.7 617 605 124.0
A 3 137 6047 43.9 617 605 124.0
B 5 31 4992193 101759.08 252 246 49.1
B 5 15 4663007 95048.74 252 246 49.1
B 5 14 2247036 45800.02 252 246 49.1
C 0 207 668831 4817.54 599 605 138.7
C 9 187 308482 2219.62 599 605 138.7
C 15 214 212400 1526.92 599 605 138.7
D 13 249 1087705 7741.62 577 561 140.4
D 1 52 251919 1789.94 577 561 140.4
D 8 195 201004 1427.37 577 561 140.4

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