ASTROSAT CZTI

Data Quality Report

Orbit 34610

Creation date: 2022-02-21T15:02:30.517939
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_046T09_9000004952_34610cztM0_level2.evt modeM0/AS1A11_046T09_9000004952_34610cztM0_level2_quad_clean.evt
Size (bytes)148,193,28016,401,600
Size141.3 MB 15.6 MB
Events in quadrant A826,117100,255
Events in quadrant B1,167,17198,914
Events in quadrant C885,21297,321
Events in quadrant D1,507,01889,950

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033032
B044001
C034841
D055321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148280.539811%
B14821238.299595%
C1482191.282051%
D1482744.993252%

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 3545 1483 2 2 0.06% 0.13%
B 3545 1482 81 81 2.28% 5.47%
C 3545 1483 10 10 0.28% 0.67%
D 3545 1483 72 72 2.03% 4.86%

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 18924 445.84 204 201 42.0
A 9 143 13036 305.63 204 201 42.0
A 15 169 3542 79.56 204 201 42.0
B 5 172 345846 8970.88 195 191 38.5
B 4 232 36708 947.74 195 191 38.5
B 10 245 4941 123.28 195 191 38.5
C 15 214 64871 1418.85 193 195 45.6
C 0 10 49638 1084.67 193 195 45.6
C 14 67 10598 228.22 193 195 45.6
D 8 195 534648 11077.47 192 187 48.2
D 10 118 113506 2348.7 192 187 48.2
D 7 38 35977 741.8 192 187 48.2

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