ASTROSAT CZTI

Data Quality Report

Orbit 20621

Creation date: 2024-06-27T18:17:31.734748
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/AS1A06_005T02_9000003048_20621cztM0_level2.evt modeM0/AS1A06_005T02_9000003048_20621cztM0_level2_quad_clean.evt
Size (bytes)499,628,16087,215,040
Size476.5 MB 83.2 MB
Events in quadrant A3,596,466557,196
Events in quadrant B3,552,878555,408
Events in quadrant C3,368,687538,096
Events in quadrant D4,156,512521,141

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147542
B0146062
C0141872
D0166702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6734490.727651%
B67341001.485001%
C67341061.574102%
D67341111.648352%

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 7699 6735 2 2 0.03% 0.03%
B 7699 6735 30 30 0.39% 0.45%
C 7699 6735 4 4 0.05% 0.06%
D 7699 6735 76 76 0.99% 1.13%

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 12 16 262930 1554.61 840 824 168.6
A 12 194 54480 318.25 840 824 168.6
A 15 174 39717 230.68 840 824 168.6
B 7 220 181062 1131.94 833 814 159.2
B 12 111 18711 112.39 833 814 159.2
B 0 244 16664 99.54 833 814 159.2
C 14 238 126135 669.22 804 809 187.3
C 8 208 85656 453.07 804 809 187.3
C 9 54 15052 76.06 804 809 187.3
D 2 165 458964 2327.95 812 788 196.8
D 5 222 328868 1666.94 812 788 196.8
D 1 52 173401 877.03 812 788 196.8

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