ASTROSAT CZTI

Data Quality Report

Orbit 20180624_G08_010T02_9000002188_level2

Creation date: 2025-11-23T03:15:44.286467
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/AS1G08_010T02_9000002188cztM0_level2.fits modeM0/AS1G08_010T02_9000002188cztM0_level2_quad_clean.evt
Size (bytes)793,693,440726,935,040
Size756.9 MB 693.3 MB
Events in quadrant A4,926,1584,366,015
Events in quadrant B4,611,4324,238,439
Events in quadrant C4,706,2983,991,594
Events in quadrant D4,185,3543,812,624

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01755340
B01930080
C01915040
D01867010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016640
B016640
C016640
D016640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A817788861.083421%
B8177829033.549854%
C8177823122.827166%
D8177819312.361271%

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 98252 81780 0 0 0.00% 0.00%
B 98252 81725 0 0 0.00% 0.00%
C 98252 81720 0 0 0.00% 0.00%
D 98252 81775 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 0 29 4707 11.08 1283 1203 316.2
A 7 110 3812 8.25 1283 1203 316.2
A 15 236 3662 7.78 1283 1203 316.2
B 2 9 3915 11.41 1221 1163 241.2
B 5 128 3011 7.66 1221 1163 241.2
B 14 254 2989 7.57 1221 1163 241.2
C 12 241 3223 6.4 1245 1155 323.3
C 3 126 3223 6.4 1245 1155 323.3
C 3 158 3143 6.15 1245 1155 323.3
D 6 231 3026 6.05 1194 1085 320.7
D 10 189 2985 5.92 1194 1085 320.7
D 3 14 2922 5.73 1194 1085 320.7

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