ASTROSAT CZTI

Data Quality Report

Orbit 09977

Creation date: 2024-06-27T15:53:15.142923
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/AS1G07_074T01_9000001426_09977cztM0_level2.evt modeM0/AS1G07_074T01_9000001426_09977cztM0_level2_quad_clean.evt
Size (bytes)684,659,52096,131,520
Size652.9 MB 91.7 MB
Events in quadrant A6,639,210576,389
Events in quadrant B4,424,695589,189
Events in quadrant C3,809,653596,311
Events in quadrant D5,291,842565,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02561347
B01893136
C01754314
D02142050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8402100211.925732%
B84032863.403546%
C84121611.913932%
D84032522.998929%

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 9088 8418 736 736 8.10% 8.74%
B 9088 8418 53 53 0.58% 0.63%
C 9088 8418 0 0 0.00% 0.00%
D 9088 8419 93 93 1.02% 1.10%

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 13 251 2919507 14892.76 951 930 196.0
A 8 15 44057 220.07 951 930 196.0
A 0 226 8692 39.61 951 930 196.0
B 4 239 244652 1256.53 991 963 193.9
B 11 51 94820 483.95 991 963 193.9
B 4 81 89837 458.26 991 963 193.9
C 8 128 11444 45.94 969 974 227.9
C 14 67 8978 35.12 969 974 227.9
C 13 61 7274 27.64 969 974 227.9
D 8 195 520621 2103.56 950 925 247.1
D 2 16 348168 1405.53 950 925 247.1
D 1 52 322053 1299.82 950 925 247.1

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