ASTROSAT CZTI

Data Quality Report

Orbit 37790

Creation date: 2024-06-27T21:44:28.340029
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/AS1T05_057T01_9000005346_37790cztM0_level2.evt modeM0/AS1T05_057T01_9000005346_37790cztM0_level2_quad_clean.evt
Size (bytes)397,304,64061,522,560
Size378.9 MB 58.7 MB
Events in quadrant A3,106,308369,549
Events in quadrant B2,883,593372,614
Events in quadrant C2,816,203372,922
Events in quadrant D2,840,529350,875

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125683
B0120112
C0116722
D0123062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5669490.864350%
B5669160.282237%
C5669190.335156%
D5669490.864350%

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 7222 5670 29 29 0.40% 0.51%
B 7222 5670 8 8 0.11% 0.14%
C 7222 5670 5 5 0.07% 0.09%
D 7222 5670 47 47 0.65% 0.83%

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 346742 2633.95 646 635 131.4
A 9 143 176730 1340.12 646 635 131.4
A 13 248 44675 335.15 646 635 131.4
B 0 219 106881 854.47 644 627 124.3
B 0 229 51926 412.53 644 627 124.3
B 0 230 47586 377.63 644 627 124.3
C 15 214 263273 1767.54 633 636 148.6
C 0 10 60141 400.47 633 636 148.6
C 0 207 14565 93.74 633 636 148.6
D 13 249 109250 701.71 627 608 154.8
D 10 199 92767 595.24 627 608 154.8
D 1 47 41731 265.61 627 608 154.8

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