ASTROSAT CZTI

Data Quality Report

Orbit 28784

Creation date: 2024-06-27T19:56:17.096395
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/AS1C05_019T04_9000004130_28784cztM0_level2.evt modeM0/AS1C05_019T04_9000004130_28784cztM0_level2_quad_clean.evt
Size (bytes)1,231,954,560172,704,960
Size1.1 GB 164.7 MB
Events in quadrant A5,691,4111,172,003
Events in quadrant B5,754,5561,187,632
Events in quadrant C6,786,9121,134,223
Events in quadrant D18,250,274889,157

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250422
B0251862
C0279722
D0626492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12244580.473701%
B12244540.441032%
C122442492.033649%
D12244523242.731134%

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 13529 12245 20 20 0.15% 0.16%
B 13529 12245 11 11 0.08% 0.09%
C 13529 12244 1 1 0.01% 0.01%
D 13529 12244 4540 4540 33.56% 37.08%

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 15 174 69022 234.42 1441 1409 288.4
A 1 113 34268 113.92 1441 1409 288.4
A 13 254 22667 73.7 1441 1409 288.4
B 5 255 71792 259.55 1430 1392 271.2
B 0 229 45153 161.34 1430 1392 271.2
B 12 111 34488 122.02 1430 1392 271.2
C 3 233 1059345 3299.99 1376 1383 320.6
C 14 238 273908 850.06 1376 1383 320.6
C 14 254 80936 248.14 1376 1383 320.6
D 1 52 7226550 28466.2 1064 1032 253.8
D 8 195 5009222 19730.65 1064 1032 253.8
D 13 104 1791845 7055.22 1064 1032 253.8

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