ASTROSAT CZTI

Data Quality Report

Orbit 21880

Creation date: 2024-06-27T18:33:24.303559
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_041T01_9000003234_21880cztM0_level2.evt modeM0/AS1A07_041T01_9000003234_21880cztM0_level2_quad_clean.evt
Size (bytes)410,474,88098,665,920
Size391.5 MB 94.1 MB
Events in quadrant A2,814,306647,674
Events in quadrant B3,225,453656,791
Events in quadrant C2,825,487639,916
Events in quadrant D3,155,273622,152

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123541
B0133731
C0123831
D0134031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6033330.546992%
B6034631.044084%
C6033651.077408%
D6033801.326040%

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 6998 6033 0 0 0.00% 0.00%
B 6999 6034 24 24 0.34% 0.40%
C 6998 6033 0 0 0.00% 0.00%
D 6998 6033 54 54 0.77% 0.90%

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 10551 67.15 727 713 146.5
A 3 137 6214 37.55 727 713 146.5
A 0 226 6202 37.47 727 713 146.5
B 0 190 142546 1017.67 724 706 139.4
B 3 64 105030 748.5 724 706 139.4
B 0 197 46237 326.67 724 706 139.4
C 14 238 110097 670.35 697 701 163.2
C 13 61 4854 25.45 697 701 163.2
C 3 202 1695 6.09 697 701 163.2
D 1 52 338593 1941.49 707 684 174.0
D 2 234 25389 141.94 707 684 174.0
D 7 238 22921 127.76 707 684 174.0

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