ASTROSAT CZTI

Data Quality Report

Orbit 19743

Creation date: 2024-06-27T18:06:24.897778
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/AS1C04_001T01_9000002948_19743cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19743cztM0_level2_quad_clean.evt
Size (bytes)436,386,240125,046,720
Size416.2 MB 119.3 MB
Events in quadrant A2,915,048842,523
Events in quadrant B3,081,704876,651
Events in quadrant C3,266,865845,807
Events in quadrant D3,539,784798,677

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126232
B0130262
C0136062
D0147922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A607050.082372%
B6070240.395387%
C6070590.971993%
D60701211.993410%

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 7475 6071 0 0 0.00% 0.00%
B 7475 6071 0 0 0.00% 0.00%
C 7475 6071 0 0 0.00% 0.00%
D 7475 6071 86 86 1.15% 1.42%

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 11 29 17215 110.04 753 740 149.7
A 0 226 6507 38.52 753 740 149.7
A 13 254 6440 38.07 753 740 149.7
B 7 220 22776 155.8 768 750 141.4
B 12 111 15875 106.98 768 750 141.4
B 4 142 15398 103.61 768 750 141.4
C 3 233 240007 1414.78 740 747 169.1
C 14 238 118788 697.99 740 747 169.1
C 7 247 15066 84.67 740 747 169.1
D 1 52 582656 3320.24 728 707 175.3
D 12 225 47899 269.25 728 707 175.3
D 13 172 35820 200.33 728 707 175.3

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