ASTROSAT CZTI

Data Quality Report

Orbit 20240307_A13_071T07_9000006116_level2

Creation date: 2024-03-09T12:16:32.213945
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/AS1A13_071T07_9000006116cztM0_level2.fits modeM0/AS1A13_071T07_9000006116cztM0_level2_quad_clean.evt
Size (bytes)841,224,9601,003,867,200
Size802.3 MB 957.4 MB
Events in quadrant A5,044,9266,370,947
Events in quadrant B4,805,9826,308,058
Events in quadrant C4,980,0205,936,295
Events in quadrant D4,166,5125,318,439

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01350
B01350
C01350
D01350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03043420
B02373060
C02437890
D03011620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019180
B019180
C019180
D019180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9438927462.909237%
B9439058196.164848%
C9439052125.521771%
D9439080268.503019%

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 107854 94381 0 0 0.00% 0.00%
B 107855 94300 0 0 0.00% 0.00%
C 107855 94376 0 0 0.00% 0.00%
D 107855 94186 0 0 0.00% 0.00%

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 7 110 4063 8.5 1316 1237 332.4
A 0 29 3991 8.28 1316 1237 332.4
A 14 95 3883 7.96 1316 1237 332.4
B 2 9 4461 13.22 1273 1218 245.2
B 2 8 3648 9.91 1273 1218 245.2
B 3 17 3415 8.96 1273 1218 245.2
C 1 81 3857 7.71 1318 1232 340.3
C 3 202 3835 7.65 1318 1232 340.3
C 3 203 3697 7.24 1318 1232 340.3
D 10 189 3088 6.03 1198 1088 331.8
D 6 38 2996 5.75 1198 1088 331.8
D 4 12 2975 5.69 1198 1088 331.8

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