ASTROSAT CZTI

Data Quality Report

Orbit 39228

Creation date: 2024-06-27T22:02:00.437956
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/AS1A12_054T04_9000005446_39228cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39228cztM0_level2_quad_clean.evt
Size (bytes)992,165,760148,979,520
Size946.2 MB 142.1 MB
Events in quadrant A5,254,8071,175,075
Events in quadrant B4,494,2411,198,340
Events in quadrant C4,584,2511,116,621
Events in quadrant D21,647,662354,119

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212763
B0197212
C0194984
D0709132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9620640.665281%
B9620180.187110%
C961980.083169%
D9620698472.598753%

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 13447 9622 43 43 0.32% 0.45%
B 13447 9622 8 8 0.06% 0.08%
C 13447 9622 0 0 0.00% 0.00%
D 13447 9620 6125 6125 45.55% 63.67%

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 10 83 690485 3101.39 1111 1091 222.3
A 13 248 271524 1216.6 1111 1091 222.3
A 13 254 13287 54.87 1111 1091 222.3
B 5 172 83839 402.95 1095 1067 205.4
B 5 255 68287 327.24 1095 1067 205.4
B 12 111 25256 117.76 1095 1067 205.4
C 15 214 400035 1644.39 1057 1060 242.6
C 0 239 31857 126.93 1057 1060 242.6
C 9 187 10102 37.26 1057 1060 242.6
D 12 235 17717601 109767.86 661 642 161.4
D 1 47 485047 3001.2 661 642 161.4
D 2 249 442351 2736.67 661 642 161.4

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