ASTROSAT CZTI

Data Quality Report

Orbit 31138

Creation date: 2024-06-27T20:23:48.047800
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_071T64_9000004496_31138cztM0_level2.evt modeM0/AS1A10_071T64_9000004496_31138cztM0_level2_quad_clean.evt
Size (bytes)364,178,88048,496,320
Size347.3 MB 46.2 MB
Events in quadrant A2,058,797301,215
Events in quadrant B3,470,223300,855
Events in quadrant C2,260,563284,963
Events in quadrant D2,946,101277,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088431
B0132431
C093541
D0116451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A431890.208430%
B4318230.532654%
C4318872.014822%
D4318801.852710%

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 4318 4318 0 0 0.00% 0.00%
B 4318 4318 1 1 0.02% 0.02%
C 4318 4318 25 25 0.58% 0.58%
D 4318 4318 63 63 1.46% 1.46%

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 12 96 17812 162.73 528 518 106.3
A 13 254 7963 70.05 528 518 106.3
A 3 137 5052 42.66 528 518 106.3
B 6 159 1309927 12911.35 527 514 101.4
B 0 190 20301 195.11 527 514 101.4
B 0 230 17477 167.26 527 514 101.4
C 0 10 173658 1448.48 503 507 119.5
C 14 238 83691 695.87 503 507 119.5
C 4 175 14028 113.11 503 507 119.5
D 8 195 820002 6285.51 504 494 130.4
D 13 249 140483 1073.7 504 494 130.4
D 2 250 17473 130.23 504 494 130.4

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