ASTROSAT CZTI

Data Quality Report

Orbit 04905

Creation date: 2024-06-27T14:48:39.481875
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/AS1G05_237T01_9000000620_04905cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04905cztM0_level2_quad_clean.evt
Size (bytes)722,292,48059,313,600
Size688.8 MB 56.6 MB
Events in quadrant A2,815,089409,676
Events in quadrant B2,913,784411,420
Events in quadrant C2,672,574405,258
Events in quadrant D13,089,335172,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117732
B0119241
C0115541
D0427421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5652601.061571%
B5652530.937721%
C5652310.548478%
D5652536494.904459%

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 6867 5652 2 2 0.03% 0.04%
B 6867 5652 0 0 0.00% 0.00%
C 6867 5652 1 1 0.01% 0.02%
D 6866 5651 5039 5039 73.39% 89.17%

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 31 22593 150.51 714 701 145.4
A 13 251 13531 88.21 714 701 145.4
A 0 50 10570 67.85 714 701 145.4
B 15 204 40372 292.39 714 700 135.7
B 4 172 36836 266.33 714 700 135.7
B 15 54 25065 179.58 714 700 135.7
C 13 61 5495 30.46 683 689 157.8
C 12 2 4960 27.07 683 689 157.8
C 8 222 2986 14.56 683 689 157.8
D 2 63 11231892 132608.39 340 330 84.7
D 2 33 303262 3576.65 340 330 84.7
D 2 234 109888 1293.53 340 330 84.7

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