ASTROSAT CZTI

Data Quality Report

Orbit 25176

Creation date: 2024-06-27T19:14:44.720207
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/AS1A07_171T02_9000003686_25176cztM0_level2.evt modeM0/AS1A07_171T02_9000003686_25176cztM0_level2_quad_clean.evt
Size (bytes)626,754,240126,478,080
Size597.7 MB 120.6 MB
Events in quadrant A3,881,646837,570
Events in quadrant B6,123,702815,876
Events in quadrant C4,136,214804,814
Events in quadrant D4,277,426796,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170230
B0236220
C0175350
D0181280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8284931.122646%
B82847038.486239%
C82841772.136649%
D8284991.195075%

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 9138 8284 0 0 0.00% 0.00%
B 9138 8285 391 391 4.28% 4.72%
C 9139 8284 0 0 0.00% 0.00%
D 9139 8285 17 17 0.19% 0.21%

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 13589 62.37 1007 985 202.1
A 3 137 9363 41.46 1007 985 202.1
A 0 226 8692 38.14 1007 985 202.1
B 3 64 2184118 11839.37 976 951 184.4
B 0 189 50595 269.22 976 951 184.4
B 0 190 33221 175.0 976 951 184.4
C 3 233 217089 962.28 958 961 224.6
C 14 238 152442 674.45 958 961 224.6
C 7 247 13951 57.84 958 961 224.6
D 8 195 322079 1373.94 971 942 233.7
D 1 52 89319 378.11 971 942 233.7
D 2 244 72275 305.19 971 942 233.7

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