ASTROSAT CZTI

Data Quality Report

Orbit 37699

Creation date: 2024-06-27T21:43:17.342734
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_075T01_9000005342_37699cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37699cztM0_level2_quad_clean.evt
Size (bytes)595,667,52075,211,200
Size568.1 MB 71.7 MB
Events in quadrant A5,116,067451,494
Events in quadrant B3,301,034477,821
Events in quadrant C3,171,949483,390
Events in quadrant D6,023,314423,735

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198463
B0140462
C0133532
D0224382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63063215.090390%
B63061101.744370%
C6306280.444022%
D630687713.907390%

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 9261 6308 286 286 3.09% 4.53%
B 9260 6305 61 61 0.66% 0.97%
C 9260 6305 27 27 0.29% 0.43%
D 9261 6306 846 846 9.14% 13.42%

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 15 222 1368041 9702.97 703 688 140.9
A 13 248 589658 4179.43 703 688 140.9
A 10 83 345859 2449.39 703 688 140.9
B 5 172 288835 2130.14 706 686 135.3
B 0 230 68079 498.2 706 686 135.3
B 5 200 49554 361.26 706 686 135.3
C 15 214 283227 1747.16 696 700 161.7
C 14 254 95951 589.04 696 700 161.7
C 0 10 79156 485.17 696 700 161.7
D 12 227 2930087 18612.21 645 627 157.4
D 13 249 356848 2263.24 645 627 157.4
D 2 249 110043 695.17 645 627 157.4

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