ASTROSAT CZTI

Data Quality Report

Orbit 19152

Creation date: 2024-06-27T17:59:35.268060
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/AS1A05_046T01_9000002838_19152cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19152cztM0_level2_quad_clean.evt
Size (bytes)505,152,000102,683,520
Size481.8 MB 97.9 MB
Events in quadrant A3,525,148648,269
Events in quadrant B3,690,777673,544
Events in quadrant C3,897,688649,487
Events in quadrant D3,689,457630,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152592
B0157442
C0161152
D0160082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7283680.933681%
B72841522.086766%
C72831321.812440%
D72831401.922285%

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 9383 7285 6 6 0.06% 0.08%
B 9384 7286 13 13 0.14% 0.18%
C 9383 7284 1 1 0.01% 0.01%
D 9383 7285 51 51 0.54% 0.70%

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 15 174 57735 313.41 898 880 181.4
A 11 29 7929 38.86 898 880 181.4
A 0 226 7780 38.03 898 880 181.4
B 7 220 93494 532.8 905 882 173.8
B 0 190 26192 145.61 905 882 173.8
B 3 112 21199 116.88 905 882 173.8
C 3 233 337422 1620.84 879 888 207.6
C 14 238 135202 646.89 879 888 207.6
C 13 61 6211 25.64 879 888 207.6
D 1 52 209332 964.98 884 861 216.0
D 11 176 139076 639.78 884 861 216.0
D 2 234 27447 123.06 884 861 216.0

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