ASTROSAT CZTI

Data Quality Report

Orbit 20160313_T01_046T01_9000000372_level2

Creation date: 2025-10-28T17:26:57.022076
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/AS1T01_046T01_9000000372cztM0_level2.fits modeM0/AS1T01_046T01_9000000372cztM0_level2_quad_clean.evt
Size (bytes)786,286,080846,659,520
Size749.9 MB 807.4 MB
Events in quadrant A4,664,8785,032,425
Events in quadrant B4,543,4855,100,533
Events in quadrant C4,550,9404,846,689
Events in quadrant D3,916,4844,527,340

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01835890
B01840360
C01922140
D01968350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01430
D01430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018260
B018260
C018240
D018220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A895099831.098214%
B895099871.102682%
C8950018982.120670%
D8949314691.641469%

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 103965 89570 0 0 0.00% 0.00%
B 103965 89560 0 0 0.00% 0.00%
C 103965 89490 0 0 0.00% 0.00%
D 103964 89544 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 4326 10.2 1213 1129 313.5
A 7 110 4062 9.36 1213 1129 313.5
A 9 19 3461 7.44 1213 1129 313.5
B 2 9 4157 13.01 1196 1137 232.1
B 12 226 3460 10.01 1196 1137 232.1
B 14 254 3318 9.4 1196 1137 232.1
C 7 111 3129 6.21 1205 1109 325.3
C 9 242 3029 5.9 1205 1109 325.3
C 9 188 3026 5.89 1205 1109 325.3
D 11 82 3029 6.45 1119 1012 312.5
D 10 189 2935 6.15 1119 1012 312.5
D 6 231 2927 6.13 1119 1012 312.5

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