ASTROSAT CZTI

Data Quality Report

Orbit 28900

Creation date: 2024-06-27T19:57:45.798583
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/AS1A10_064T01_9000004144_28900cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28900cztM0_level2_quad_clean.evt
Size (bytes)1,424,764,800137,338,560
Size1.3 GB 131.0 MB
Events in quadrant A5,335,295938,253
Events in quadrant B5,429,438949,365
Events in quadrant C13,357,880819,646
Events in quadrant D18,254,570655,524

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235392
B0236762
C0480342
D0622052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114741441.255011%
B114741581.377026%
C11474199617.395851%
D11474515744.945093%

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 12444 11474 0 0 0.00% 0.00%
B 12444 11474 2 2 0.02% 0.02%
C 12444 11474 1244 1244 10.00% 10.84%
D 12444 11474 4969 4969 39.93% 43.31%

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 19870 66.58 1381 1347 278.2
A 3 137 13622 44.12 1381 1347 278.2
A 0 226 11856 37.77 1381 1347 278.2
B 12 111 33321 121.21 1368 1330 263.9
B 11 111 30081 108.93 1368 1330 263.9
B 14 111 27245 98.19 1368 1330 263.9
C 3 233 8135505 27104.24 1273 1281 300.1
C 14 238 213086 705.76 1273 1281 300.1
C 2 114 26868 85.26 1273 1281 300.1
D 8 195 12617005 47514.58 1115 1082 265.5
D 1 52 1381952 5200.69 1115 1082 265.5
D 2 234 40124 147.04 1115 1082 265.5

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