ASTROSAT CZTI

Data Quality Report

Orbit 21691

Creation date: 2024-06-27T18:31:08.898127
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/AS1A07_006T04_9000003210_21691cztM0_level2.evt modeM0/AS1A07_006T04_9000003210_21691cztM0_level2_quad_clean.evt
Size (bytes)1,409,215,680281,574,720
Size1.3 GB 268.5 MB
Events in quadrant A8,801,0091,829,693
Events in quadrant B9,442,6021,880,508
Events in quadrant C9,716,6341,791,748
Events in quadrant D13,433,5841,716,738

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388954
B0401505
C0412694
D0527964

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190133591.888182%
B190134302.261610%
C190135422.850681%
D1901310905.732920%

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 20938 19017 0 0 0.00% 0.00%
B 20938 19017 26 26 0.12% 0.14%
C 20938 19017 99 99 0.47% 0.52%
D 20938 19017 623 623 2.98% 3.28%

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 15 236 51541 108.83 2258 2205 453.3
A 13 254 33940 70.01 2258 2205 453.3
A 6 16 24306 48.75 2258 2205 453.3
B 3 64 203563 474.34 2263 2205 424.5
B 0 229 132933 307.96 2263 2205 424.5
B 0 189 70379 160.6 2263 2205 424.5
C 8 208 891607 1758.75 2170 2179 505.7
C 14 238 342589 673.12 2170 2179 505.7
C 10 22 20189 35.61 2170 2179 505.7
D 1 52 2090548 3983.53 2171 2107 524.3
D 7 238 1569411 2989.5 2171 2107 524.3
D 12 235 692201 1316.3 2171 2107 524.3

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