ASTROSAT CZTI

Data Quality Report

Orbit 35771

Creation date: 2022-07-18T22:27:56.664121
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_058T14_9000005134_35771cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35771cztM0_level2_quad_clean.evt
Size (bytes)385,649,28074,364,480
Size367.8 MB 70.9 MB
Events in quadrant A2,530,392488,880
Events in quadrant B2,796,584486,224
Events in quadrant C2,783,830459,771
Events in quadrant D3,214,584452,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107943
B0116422
C0114612
D0129372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520260.115340%
B5202651.249519%
C52021102.114571%
D52021402.691273%

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 7205 5203 0 0 0.00% 0.00%
B 7205 5203 43 43 0.60% 0.83%
C 7205 5203 100 100 1.39% 1.92%
D 7205 5203 122 122 1.69% 2.34%

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 10 83 159377 1298.39 608 599 122.3
A 13 6 15007 117.82 608 599 122.3
A 13 254 6278 46.44 608 599 122.3
B 5 172 153818 1335.94 600 587 114.7
B 5 255 91232 790.28 600 587 114.7
B 4 81 79017 683.79 600 587 114.7
C 0 10 286630 2153.78 571 577 132.8
C 15 214 217093 1630.22 571 577 132.8
C 9 187 38875 288.36 571 577 132.8
D 13 249 267366 1883.69 577 561 141.6
D 10 118 222646 1567.96 577 561 141.6
D 7 223 104021 730.45 577 561 141.6

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