ASTROSAT CZTI

Data Quality Report

Orbit 23637

Creation date: 2024-06-27T18:57:03.821828
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_147T01_9000003490_23637cztM0_level2.evt modeM0/AS1A07_147T01_9000003490_23637cztM0_level2_quad_clean.evt
Size (bytes)512,049,600101,528,640
Size488.3 MB 96.8 MB
Events in quadrant A3,269,515667,910
Events in quadrant B3,544,843693,706
Events in quadrant C3,329,765646,371
Events in quadrant D4,925,954616,962

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135502
B0144492
C0137272
D0189492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6451230.356534%
B6451741.147109%
C6451811.255619%
D64513865.983568%

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 7816 6453 0 0 0.00% 0.00%
B 7816 6452 15 15 0.19% 0.23%
C 7816 6452 1 1 0.01% 0.02%
D 7816 6453 326 326 4.17% 5.05%

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 9286 49.95 848 832 169.2
A 0 226 7347 38.5 848 832 169.2
A 3 137 7019 36.56 848 832 169.2
B 0 189 102201 634.58 849 829 159.7
B 3 64 70013 433.09 849 829 159.7
B 10 247 39827 244.12 849 829 159.7
C 14 238 131262 690.46 810 817 188.9
C 7 247 17475 88.17 810 817 188.9
C 0 10 15792 79.26 810 817 188.9
D 1 52 1425138 7364.42 802 780 193.4
D 12 233 298610 1539.88 802 780 193.4
D 9 85 139867 719.13 802 780 193.4

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