ASTROSAT CZTI

Data Quality Report

Orbit 26111

Creation date: 2024-06-27T19:24:49.380540
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/AS1A09_018T01_9000003774_26111cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26111cztM0_level2_quad_clean.evt
Size (bytes)509,137,92070,493,760
Size485.6 MB 67.2 MB
Events in quadrant A3,427,152434,676
Events in quadrant B3,519,043447,827
Events in quadrant C3,493,190412,827
Events in quadrant D4,551,708398,215

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138250
B0142220
C0140800
D0177580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6327320.505769%
B6327370.584795%
C6327711.122175%
D6327951.501502%

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 7652 6328 2 2 0.03% 0.03%
B 7652 6327 0 0 0.00% 0.00%
C 7652 6327 0 0 0.00% 0.00%
D 7652 6327 64 64 0.84% 1.01%

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 0 13 10387 54.78 888 876 173.6
A 13 254 8666 44.86 888 876 173.6
A 3 137 7585 38.64 888 876 173.6
B 0 229 22503 130.49 889 872 165.8
B 12 111 19408 111.82 889 872 165.8
B 11 111 17534 100.51 889 872 165.8
C 14 238 138765 716.5 839 846 192.5
C 13 250 58768 300.91 839 846 192.5
C 3 233 13167 64.01 839 846 192.5
D 1 52 935500 4758.44 836 818 196.4
D 12 233 247595 1256.33 836 818 196.4
D 12 217 101511 512.63 836 818 196.4

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