ASTROSAT CZTI

Data Quality Report

Orbit 20160107_G02_010T01_9000000252_level2

Creation date: 2025-10-25T18:27:07.550222
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/AS1G02_010T01_9000000252cztM0_level2.fits modeM0/AS1G02_010T01_9000000252cztM0_level2_quad_clean.evt
Size (bytes)797,097,600932,235,840
Size760.2 MB 889.0 MB
Events in quadrant A4,660,1025,774,173
Events in quadrant B4,615,4805,782,179
Events in quadrant C4,579,6865,522,066
Events in quadrant D3,856,0824,729,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019100
B019100
C019100
D019100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04025830
B04153150
C03935020
D04215210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A936115640.602493%
B938056180.658813%
C938903990.424965%
D9381342794.561202%

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 113124 93601 0 0 0.00% 0.00%
B 113124 93798 0 0 0.00% 0.00%
C 113124 93882 0 0 0.00% 0.00%
D 113124 93573 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 4422 11.69 1202 1118 282.7
A 14 188 4263 11.12 1202 1118 282.7
A 7 110 4148 10.72 1202 1118 282.7
B 2 9 3658 11.18 1216 1151 224.3
B 14 254 3074 8.57 1216 1151 224.3
B 5 128 2994 8.22 1216 1151 224.3
C 12 241 3013 6.36 1209 1116 298.4
C 9 242 3010 6.35 1209 1116 298.4
C 2 127 3007 6.34 1209 1116 298.4
D 6 44 2777 6.74 1102 1009 262.1
D 15 30 2761 6.68 1102 1009 262.1
D 6 231 2742 6.61 1102 1009 262.1

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