ASTROSAT CZTI

Data Quality Report

Orbit 44201

Creation date: 2024-06-27T23:00:27.951532
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/AS1A13_074T09_9000005968_44201cztM0_level2.fits modeM0/AS1A13_074T09_9000005968_44201cztM0_level2_quad_clean.evt
Size (bytes)523,252,800109,385,280
Size499.0 MB 104.3 MB
Events in quadrant A6,456,700658,851
Events in quadrant B3,929,547770,183
Events in quadrant C3,433,319755,013
Events in quadrant D5,026,717658,789

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239202
B0161722
C0148302
D0197042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6733107816.010694%
B67332573.817021%
C6733931.381256%
D67334426.564681%

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 7598 6734 633 633 8.33% 9.40%
B 7598 6734 65 65 0.86% 0.97%
C 7598 6734 33 33 0.43% 0.49%
D 7598 6734 266 266 3.50% 3.95%

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 15 223 1872577 11855.58 759 744 157.9
A 10 83 1572189 9953.02 759 744 157.9
A 0 243 36669 227.54 759 744 157.9
B 5 172 142444 916.58 788 763 154.6
B 0 190 91774 588.78 788 763 154.6
B 5 235 78253 501.31 788 763 154.6
C 14 254 240513 1297.71 782 785 184.7
C 12 249 44736 237.92 782 785 184.7
C 3 233 41181 218.67 782 785 184.7
D 2 249 450609 2327.2 762 740 193.3
D 12 16 313662 1618.77 762 740 193.3
D 1 52 286297 1477.21 762 740 193.3

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