ASTROSAT CZTI

Data Quality Report

Orbit 18762

Creation date: 2024-06-27T17:54:32.246389
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/AS1A05_115T03_9000002806_18762cztM0_level2.evt modeM0/AS1A05_115T03_9000002806_18762cztM0_level2_quad_clean.evt
Size (bytes)519,272,640100,440,000
Size495.2 MB 95.8 MB
Events in quadrant A3,778,835631,817
Events in quadrant B3,864,656641,161
Events in quadrant C3,816,769620,291
Events in quadrant D3,740,762610,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161542
B0163692
C0161503
D0162012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77311221.578062%
B77321712.211588%
C77312072.677532%
D77311181.526323%

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 9321 7733 0 0 0.00% 0.00%
B 9322 7734 0 0 0.00% 0.00%
C 9321 7733 0 0 0.00% 0.00%
D 9321 7733 1 1 0.01% 0.01%

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 6 16 12734 59.94 974 953 196.6
A 13 254 11384 53.07 974 953 196.6
A 15 192 10029 46.17 974 953 196.6
B 0 229 23493 120.82 970 942 186.6
B 12 111 23114 118.79 970 942 186.6
B 11 111 20446 104.5 970 942 186.6
C 14 238 145302 656.7 938 944 219.8
C 3 233 12630 53.16 938 944 219.8
C 13 61 6602 25.74 938 944 219.8
D 7 223 66689 284.27 955 928 231.3
D 2 234 33641 141.41 955 928 231.3
D 1 52 24351 101.25 955 928 231.3

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