ASTROSAT CZTI

Data Quality Report

Orbit 31602

Creation date: 2024-06-27T20:30:34.026565
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/AS1C06_002T03_9000004610_31602cztM0_level2.evt modeM0/AS1C06_002T03_9000004610_31602cztM0_level2_quad_clean.evt
Size (bytes)676,379,520121,178,880
Size645.0 MB 115.6 MB
Events in quadrant A4,026,676804,373
Events in quadrant B5,273,247829,571
Events in quadrant C3,325,000818,324
Events in quadrant D7,420,393763,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016642181
B020753360
C014198233
D027059393

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01364
B01375
C01364
D01364

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65205177.929448%
B64942233.433939%
C65071462.243738%
D65004256.538462%

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 7437 6536 292 292 3.93% 4.47%
B 7437 6527 62 62 0.83% 0.95%
C 7438 6530 11 11 0.15% 0.17%
D 7423 6523 297 297 4.00% 4.55%

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 13 1202295 8222.69 731 714 146.1
A 13 254 11847 76.19 731 714 146.1
A 3 137 7308 45.12 731 714 146.1
B 6 159 1907345 13490.4 750 730 141.3
B 5 172 170186 1199.0 750 730 141.3
B 4 80 123619 869.51 750 730 141.3
C 3 233 181798 1051.93 734 738 172.1
C 14 238 127543 736.72 734 738 172.1
C 10 22 45407 259.52 734 738 172.1
D 8 195 3941190 22986.04 720 701 171.4
D 12 2 318063 1851.27 720 701 171.4
D 12 233 102113 591.57 720 701 171.4

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