ASTROSAT CZTI

Data Quality Report

Orbit 21910

Creation date: 2024-06-27T18:33:50.103172
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/AS1A07_100T03_9000003242_21910cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21910cztM0_level2_quad_clean.evt
Size (bytes)477,665,280115,663,680
Size455.5 MB 110.3 MB
Events in quadrant A3,564,034770,568
Events in quadrant B3,576,423776,759
Events in quadrant C3,412,261746,206
Events in quadrant D3,453,208737,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149472
B0148752
C0143242
D0146542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6775821.210332%
B67751191.756458%
C6775901.328413%
D6775701.033210%

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 7835 6775 11 11 0.14% 0.16%
B 7835 6775 48 48 0.61% 0.71%
C 7835 6775 3 3 0.04% 0.04%
D 7835 6775 25 25 0.32% 0.37%

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 5 16 165133 978.65 843 826 167.9
A 4 2 127673 755.53 843 826 167.9
A 10 17 20414 116.67 843 826 167.9
B 3 64 240730 1537.84 829 810 156.0
B 0 197 43173 271.54 829 810 156.0
B 0 190 25220 156.46 829 810 156.0
C 10 22 155857 835.55 802 808 185.6
C 14 238 128528 688.27 802 808 185.6
C 13 61 5639 26.03 802 808 185.6
D 1 52 236913 1199.1 817 794 196.9
D 2 136 40436 201.32 817 794 196.9
D 0 11 33360 165.38 817 794 196.9

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