ASTROSAT CZTI

Data Quality Report

Orbit 28892

Creation date: 2024-06-27T19:57:40.353959
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/AS1A10_064T01_9000004144_28892cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28892cztM0_level2_quad_clean.evt
Size (bytes)727,536,96070,332,480
Size693.8 MB 67.1 MB
Events in quadrant A3,334,680445,312
Events in quadrant B3,443,273459,630
Events in quadrant C8,454,207383,842
Events in quadrant D6,369,200393,037

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136932
B0140512
C0296862
D0233693

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6404360.562149%
B6404610.952530%
C6404122919.191131%
D64034847.558957%

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 7739 6404 0 0 0.00% 0.00%
B 7739 6404 5 5 0.06% 0.08%
C 7739 6404 638 638 8.24% 9.96%
D 7738 6403 452 452 5.84% 7.06%

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 13 254 9812 52.81 862 849 169.7
A 3 137 7690 40.31 862 849 169.7
A 0 226 7213 37.5 862 849 169.7
B 10 245 37404 227.74 867 848 160.5
B 12 111 19074 113.55 867 848 160.5
B 11 111 17493 103.7 867 848 160.5
C 3 233 5163680 28354.69 794 802 182.1
C 14 238 139936 764.13 794 802 182.1
C 2 16 25068 133.27 794 802 182.1
D 8 195 2606800 13741.17 808 788 189.6
D 1 52 694422 3657.44 808 788 189.6
D 2 234 22019 111.95 808 788 189.6

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