ASTROSAT CZTI

Data Quality Report

Orbit 34401

Creation date: 2022-02-07T13:16:18.288672
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/AS1A05_085T01_9000004910_34401cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34401cztM0_level2_quad_clean.evt
Size (bytes)969,246,720123,082,560
Size924.3 MB 117.4 MB
Events in quadrant A5,007,592763,130
Events in quadrant B7,400,095748,960
Events in quadrant C5,432,337771,707
Events in quadrant D10,781,142691,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220604
B0290523
C0222923
D0400453

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10852320.294877%
B108527747.132326%
C10852370.340951%
D108529638.873940%

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 13658 10854 15 15 0.11% 0.14%
B 13658 10854 525 525 3.84% 4.84%
C 13658 10854 19 19 0.14% 0.18%
D 13657 10853 859 859 6.29% 7.91%

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 9 143 76966 301.01 1251 1225 251.6
A 10 83 54763 212.77 1251 1225 251.6
A 13 6 31316 119.59 1251 1225 251.6
B 5 172 2199677 9389.79 1215 1179 234.1
B 0 245 130896 554.02 1215 1179 234.1
B 5 200 110269 465.92 1215 1179 234.1
C 15 214 451633 1599.92 1218 1225 281.5
C 14 67 114523 402.45 1218 1225 281.5
C 0 10 72361 252.69 1218 1225 281.5
D 2 249 1681102 5853.39 1180 1146 287.0
D 8 195 1675100 5832.47 1180 1146 287.0
D 7 223 1224269 4261.67 1180 1146 287.0

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