ASTROSAT CZTI

Data Quality Report

Orbit 07121

Creation date: 2024-06-27T15:15:51.176598
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_090T01_9000000970_07121cztM0_level2.evt modeM0/AS1A02_090T01_9000000970_07121cztM0_level2_quad_clean.evt
Size (bytes)488,972,16070,588,800
Size466.3 MB 67.3 MB
Events in quadrant A3,296,515427,205
Events in quadrant B3,545,059440,003
Events in quadrant C3,245,721425,140
Events in quadrant D4,277,932389,274

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138233
B0144912
C0136942
D0168262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6527620.949900%
B6527600.919258%
C6527370.566876%
D65272503.830244%

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 7832 6528 2 2 0.03% 0.03%
B 7832 6527 11 11 0.14% 0.17%
C 7832 6528 4 4 0.05% 0.06%
D 7832 6528 204 204 2.60% 3.12%

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 14 111 52264 308.63 827 811 166.7
A 14 238 35174 206.12 827 811 166.7
A 8 15 17863 102.28 827 811 166.7
B 3 220 133350 841.03 843 826 157.6
B 0 214 64990 407.2 843 826 157.6
B 4 81 58845 368.2 843 826 157.6
C 4 254 75557 400.79 803 812 186.5
C 10 22 26002 135.07 803 812 186.5
C 9 68 6881 32.54 803 812 186.5
D 2 216 376453 1936.96 785 762 194.0
D 12 233 353958 1820.98 785 762 194.0
D 8 195 341518 1756.85 785 762 194.0

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