ASTROSAT CZTI

Data Quality Report

Orbit 31054

Creation date: 2024-06-27T20:22:49.346085
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/AS1C06_002T01_9000004490_31054cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31054cztM0_level2_quad_clean.evt
Size (bytes)878,834,880121,178,880
Size838.1 MB 115.6 MB
Events in quadrant A3,704,763854,620
Events in quadrant B6,307,148844,023
Events in quadrant C4,041,988831,857
Events in quadrant D12,018,365578,910

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166013
B0247473
C0173723
D0413284

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80451852.299565%
B80464195.207557%
C80462463.057420%
D8045328340.807955%

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 8385 8048 0 0 0.00% 0.00%
B 8386 8049 5 5 0.06% 0.06%
C 8386 8049 1 1 0.01% 0.01%
D 8385 8048 2899 2899 34.57% 36.02%

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 14286 69.54 958 937 192.0
A 3 137 9697 45.63 958 937 192.0
A 0 226 8121 37.42 958 937 192.0
B 6 159 2309449 12781.42 948 921 180.6
B 5 172 80263 439.29 948 921 180.6
B 0 190 57260 311.93 948 921 180.6
C 3 233 202256 931.59 925 927 216.1
C 14 238 148422 682.49 925 927 216.1
C 1 16 43487 196.93 925 927 216.1
D 13 174 7878747 46653.0 711 690 168.9
D 8 195 1122778 6644.88 711 690 168.9
D 13 249 117063 689.15 711 690 168.9

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