ASTROSAT CZTI

Data Quality Report

Orbit 34985

Creation date: 2022-03-19T18:41:09.069848
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_123T09_9000005012_34985cztM0_level2.evt modeM0/AS1A10_123T09_9000005012_34985cztM0_level2_quad_clean.evt
Size (bytes)172,595,52029,067,840
Size164.6 MB 27.7 MB
Events in quadrant A1,072,645185,884
Events in quadrant B1,113,231189,290
Events in quadrant C1,172,101184,977
Events in quadrant D1,729,741172,824

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044521
B045071
C046731
D065911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2022110.544016%
B2022160.791296%
C2022281.384768%
D2022341.681503%

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 2022 2022 4 4 0.20% 0.20%
B 2022 2022 10 10 0.49% 0.49%
C 2022 2022 21 21 1.04% 1.04%
D 2022 2022 13 13 0.64% 0.64%

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 34972 652.0 262 256 53.2
A 9 143 19288 357.44 262 256 53.2
A 13 254 3416 59.35 262 256 53.2
B 5 172 63950 1271.76 259 253 50.1
B 4 232 20867 411.58 259 253 50.1
B 12 111 5635 107.46 259 253 50.1
C 15 214 85508 1411.06 257 259 60.4
C 0 10 78835 1300.61 257 259 60.4
C 14 67 2407 35.55 257 259 60.4
D 8 195 618174 9614.73 259 252 64.3
D 13 249 38622 597.03 259 252 64.3
D 12 6 17623 270.29 259 252 64.3

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