ASTROSAT CZTI

Data Quality Report

Orbit 34869

Creation date: 2022-03-11T02:51:12.515363
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/AS1C07_005T01_9000004992_34869cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34869cztM0_level2_quad_clean.evt
Size (bytes)447,857,28087,212,160
Size427.1 MB 83.2 MB
Events in quadrant A2,642,890585,839
Events in quadrant B3,960,444577,508
Events in quadrant C2,813,669575,155
Events in quadrant D3,801,060545,945

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110113
B0150622
C0113602
D0147492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50851022.005900%
B50854719.262537%
C5085731.435595%
D50851382.713864%

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 6997 5086 81 81 1.16% 1.59%
B 6997 5086 346 346 4.94% 6.80%
C 6997 5086 62 62 0.89% 1.22%
D 6997 5086 135 135 1.93% 2.65%

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 15 237 218767 1819.88 603 593 119.9
A 10 83 49358 406.77 603 593 119.9
A 13 6 21151 171.48 603 593 119.9
B 5 172 546374 4883.93 592 578 111.8
B 5 31 368422 3291.56 592 578 111.8
B 0 190 306986 2741.82 592 578 111.8
C 15 214 216051 1603.48 583 586 134.4
C 0 10 196939 1461.25 583 586 134.4
C 0 207 46384 340.83 583 586 134.4
D 8 195 569380 4041.7 579 564 140.7
D 1 52 253349 1796.16 579 564 140.7
D 12 6 171177 1212.29 579 564 140.7

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