ASTROSAT CZTI

Data Quality Report

Orbit 19100

Creation date: 2024-06-27T17:59:02.993151
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/AS1T03_098T01_9000002836_19100cztM0_level2.evt modeM0/AS1T03_098T01_9000002836_19100cztM0_level2_quad_clean.evt
Size (bytes)1,454,232,960215,611,200
Size1.4 GB 205.6 MB
Events in quadrant A8,458,5151,340,363
Events in quadrant B9,429,0331,359,617
Events in quadrant C8,599,2431,325,535
Events in quadrant D16,326,1261,249,649

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370243
B0393323
C0372813
D0609413

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182061500.823904%
B182063311.818082%
C182072321.274235%
D1820715618.573626%

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 20051 18209 0 0 0.00% 0.00%
B 20051 18209 125 125 0.62% 0.69%
C 20052 18209 24 24 0.12% 0.13%
D 20052 18210 1207 1207 6.02% 6.63%

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 8 192 67487 149.09 2167 2115 438.5
A 13 254 19881 40.52 2167 2115 438.5
A 0 226 18808 38.07 2167 2115 438.5
B 4 216 420336 1018.07 2159 2102 410.8
B 3 112 128192 306.93 2159 2102 410.8
B 7 220 87026 206.72 2159 2102 410.8
C 14 238 323045 661.28 2076 2086 485.4
C 0 207 145317 295.1 2076 2086 485.4
C 3 233 39494 77.07 2076 2086 485.4
D 7 238 3182803 6293.66 2054 1989 505.4
D 1 52 2327640 4601.61 2054 1989 505.4
D 11 176 2112399 4175.72 2054 1989 505.4

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