ASTROSAT CZTI

Data Quality Report

Orbit 07324

Creation date: 2024-06-27T15:18:28.296610
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/AS1A02_178T01_9000001006_07324cztM0_level2.evt modeM0/AS1A02_178T01_9000001006_07324cztM0_level2_quad_clean.evt
Size (bytes)601,473,600103,458,240
Size573.6 MB 98.7 MB
Events in quadrant A5,331,761626,853
Events in quadrant B4,198,815677,936
Events in quadrant C3,788,633657,723
Events in quadrant D4,353,571613,952

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211894
B0176173
C0165153
D0185053

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79994856.063258%
B7999811.012627%
C7999130.162520%
D79991341.675209%

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 32571 8001 343 343 1.05% 4.29%
B 32571 8001 8 8 0.02% 0.10%
C 32571 8001 2 2 0.01% 0.02%
D 32571 8001 71 71 0.22% 0.89%

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 15 234 1292785 6702.5 958 937 192.7
A 8 15 242268 1252.1 958 937 192.7
A 13 248 101431 521.39 958 937 192.7
B 5 143 129396 684.78 998 973 187.5
B 0 214 99551 525.64 998 973 187.5
B 4 81 67561 355.06 998 973 187.5
C 9 68 29773 130.1 959 965 221.4
C 14 234 9722 39.55 959 965 221.4
C 13 61 7466 29.36 959 965 221.4
D 2 216 354998 1555.52 943 915 227.6
D 14 34 174407 762.17 943 915 227.6
D 12 233 115048 501.4 943 915 227.6

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