ASTROSAT CZTI

Data Quality Report

Orbit 15529

Creation date: 2024-06-27T17:09:54.388260
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/AS1G08_058T09_9000002300_15529cztM0_level2.evt modeM0/AS1G08_058T09_9000002300_15529cztM0_level2_quad_clean.evt
Size (bytes)514,903,68089,398,080
Size491.1 MB 85.3 MB
Events in quadrant A3,362,174583,477
Events in quadrant B3,506,791586,613
Events in quadrant C3,429,295549,638
Events in quadrant D4,861,570540,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137353
B0142142
C0138052
D0186042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6408530.827091%
B6408741.154806%
C6408651.014357%
D64083856.008115%

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 7674 6409 0 0 0.00% 0.00%
B 7674 6409 12 12 0.16% 0.19%
C 7674 6410 1 1 0.01% 0.02%
D 7674 6410 375 375 4.89% 5.85%

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 0 253 54332 311.51 859 841 171.7
A 0 226 7761 40.3 859 841 171.7
A 12 194 6479 32.83 859 841 171.7
B 15 201 72900 454.88 844 826 158.4
B 0 189 42830 265.1 844 826 158.4
B 15 222 32292 198.59 844 826 158.4
C 3 233 172334 929.8 799 807 184.5
C 14 238 126923 683.64 799 807 184.5
C 0 207 8839 43.54 799 807 184.5
D 1 52 1276305 6326.39 821 796 201.6
D 5 222 227944 1126.63 821 796 201.6
D 12 221 193069 953.65 821 796 201.6

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