ASTROSAT CZTI

Data Quality Report

Orbit 25724

Creation date: 2024-06-27T19:20:48.957039
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/AS1A09_008T06_9000003748_25724cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25724cztM0_level2_quad_clean.evt
Size (bytes)691,663,68091,304,640
Size659.6 MB 87.1 MB
Events in quadrant A3,207,761677,417
Events in quadrant B3,436,336700,946
Events in quadrant C3,374,812669,537
Events in quadrant D10,480,587255,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137570
B0143870
C0141150
D0355440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6601260.393880%
B6601861.302833%
C66011141.727011%
D6601354953.764581%

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 7596 6602 0 0 0.00% 0.00%
B 7596 6601 10 10 0.13% 0.15%
C 7596 6602 23 23 0.30% 0.35%
D 7595 6600 3002 3002 39.53% 45.48%

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 10765 59.87 830 815 166.2
A 3 137 7585 40.74 830 815 166.2
A 0 226 7119 37.93 830 815 166.2
B 5 172 67362 422.27 836 814 157.6
B 0 229 30421 187.87 836 814 157.6
B 12 111 18754 113.84 836 814 157.6
C 14 238 131748 695.54 806 811 188.3
C 9 54 69457 364.65 806 811 188.3
C 3 233 22465 115.03 806 811 188.3
D 1 52 8447131 78969.09 436 424 107.0
D 12 227 219288 2046.18 436 424 107.0
D 8 195 67300 625.23 436 424 107.0

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