ASTROSAT CZTI

Data Quality Report

Orbit 28737

Creation date: 2024-06-27T19:55:37.979084
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/AS1A10_123T07_9000004124_28737cztM0_level2.evt modeM0/AS1A10_123T07_9000004124_28737cztM0_level2_quad_clean.evt
Size (bytes)655,971,84081,017,280
Size625.6 MB 77.3 MB
Events in quadrant A5,043,760498,979
Events in quadrant B3,592,690503,880
Events in quadrant C4,857,683482,443
Events in quadrant D5,893,234475,381

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197332
B0152252
C0195182
D0223942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70716719.489464%
B70721972.785633%
C70725127.239819%
D70715557.848961%

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 7216 7072 417 417 5.78% 5.90%
B 7217 7072 4 4 0.06% 0.06%
C 7217 7072 2 2 0.03% 0.03%
D 7216 7072 385 385 5.34% 5.44%

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 14 239 1752641 10174.91 850 831 172.2
A 13 254 14106 77.1 850 831 172.2
A 3 137 8216 42.89 850 831 172.2
B 5 255 104603 627.21 863 841 165.4
B 0 229 37725 222.95 863 841 165.4
B 4 80 32045 188.62 863 841 165.4
C 3 233 1389883 7265.04 818 819 191.2
C 14 238 191391 996.72 818 819 191.2
C 14 254 89847 465.63 818 819 191.2
D 1 52 1092046 5357.92 839 813 203.7
D 8 195 926458 4544.89 839 813 203.7
D 12 233 647345 3174.45 839 813 203.7

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