ASTROSAT CZTI

Data Quality Report

Orbit 23348

Creation date: 2024-06-27T18:53:05.965201
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_135T02_9000003450_23348cztM0_level2.evt modeM0/AS1A07_135T02_9000003450_23348cztM0_level2_quad_clean.evt
Size (bytes)1,622,053,440274,708,800
Size1.5 GB 262.0 MB
Events in quadrant A11,226,9811,716,094
Events in quadrant B10,946,0671,775,853
Events in quadrant C11,274,1051,727,329
Events in quadrant D14,277,1981,672,119

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04537181
B044433107
C045426113
D056065162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04220
B04220
C04220
D04220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A207563851.854885%
B207492361.137404%
C207473041.465272%
D207436433.099841%

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 25827 20788 181 181 0.70% 0.87%
B 25827 20783 9 9 0.03% 0.04%
C 25828 20788 0 0 0.00% 0.00%
D 25828 20781 411 411 1.59% 1.98%

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 15 174 485406 879.08 2762 2711 549.1
A 6 16 55445 96.04 2762 2711 549.1
A 2 79 54316 93.98 2762 2711 549.1
B 0 189 67700 128.08 2741 2680 507.7
B 12 111 60197 113.3 2741 2680 507.7
B 11 111 53979 101.05 2741 2680 507.7
C 14 238 428446 690.04 2677 2701 617.0
C 10 9 228229 365.53 2677 2701 617.0
C 7 247 80406 125.94 2677 2701 617.0
D 1 52 2400700 3672.09 2701 2633 653.1
D 13 104 527601 803.87 2701 2633 653.1
D 9 85 445275 677.81 2701 2633 653.1

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