ASTROSAT CZTI

Data Quality Report

Orbit 18151

Creation date: 2024-06-27T17:45:53.346305
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_103T01_9000002700_18151cztM0_level2.evt modeM0/AS1A05_103T01_9000002700_18151cztM0_level2_quad_clean.evt
Size (bytes)536,042,88072,270,720
Size511.2 MB 68.9 MB
Events in quadrant A3,707,982441,929
Events in quadrant B3,602,658446,788
Events in quadrant C3,526,697430,641
Events in quadrant D4,962,064421,316

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150052
B0146202
C0143162
D0191572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64181031.604861%
B6417841.309023%
C6417941.464859%
D64173455.376344%

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 7768 6420 14 14 0.18% 0.22%
B 7767 6419 4 4 0.05% 0.06%
C 7767 6419 0 0 0.00% 0.00%
D 7767 6419 158 158 2.03% 2.46%

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 218871 1207.58 908 892 180.5
A 0 226 8100 39.93 908 892 180.5
A 12 194 6702 32.19 908 892 180.5
B 7 220 53070 314.88 892 873 165.8
B 0 189 22470 130.28 892 873 165.8
B 12 111 18725 107.69 892 873 165.8
C 14 238 137321 683.49 865 871 199.6
C 0 207 8705 39.24 865 871 199.6
C 5 218 7528 33.35 865 871 199.6
D 13 187 766875 3573.01 876 851 214.4
D 12 110 281527 1309.17 876 851 214.4
D 10 70 139934 648.73 876 851 214.4

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