ASTROSAT CZTI

Data Quality Report

Orbit 25934

Creation date: 2024-06-27T19:22:59.622810
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/AS1T03_214T01_9000003758_25934cztM0_level2.evt modeM0/AS1T03_214T01_9000003758_25934cztM0_level2_quad_clean.evt
Size (bytes)727,865,28071,245,440
Size694.1 MB 67.9 MB
Events in quadrant A10,924,267294,085
Events in quadrant B3,307,587479,284
Events in quadrant C3,414,237462,301
Events in quadrant D3,949,482458,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370910
B0139340
C0143200
D0160860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6630278141.945701%
B6631470.708792%
C66301171.764706%
D66301442.171946%

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 7665 6631 2353 2353 30.70% 35.48%
B 7666 6632 1 1 0.01% 0.02%
C 7665 6631 22 22 0.29% 0.33%
D 7665 6631 86 86 1.12% 1.30%

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 0 13 8425898 65332.05 647 635 129.0
A 13 254 7023 49.53 647 635 129.0
A 3 137 5662 38.98 647 635 129.0
B 0 190 52092 329.79 826 805 155.5
B 12 111 19221 118.42 826 805 155.5
B 11 111 17211 105.5 826 805 155.5
C 14 238 129049 688.3 802 807 186.3
C 2 16 118951 634.1 802 807 186.3
C 3 233 44352 233.71 802 807 186.3
D 1 52 747380 3923.27 805 788 190.3
D 12 233 139978 731.43 805 788 190.3
D 2 234 27116 138.35 805 788 190.3

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