ASTROSAT CZTI

Data Quality Report

Orbit 20170422_A03_030T01_9000001194_level2

Creation date: 2025-11-11T14:56:40.213807
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/AS1A03_030T01_9000001194cztM0_level2.fits modeM0/AS1A03_030T01_9000001194cztM0_level2_quad_clean.evt
Size (bytes)317,949,120285,940,800
Size303.2 MB 272.7 MB
Events in quadrant A1,931,7721,697,063
Events in quadrant B1,865,5081,677,145
Events in quadrant C1,899,5361,603,612
Events in quadrant D1,504,8721,256,114

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07140
B07140
C07140
D07140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0727760
B0737790
C0724220
D01155100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A353135881.665109%
B353156601.868894%
C353134171.180868%
D35312516914.638083%

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 39781 35314 0 0 0.00% 0.00%
B 39781 35312 0 0 0.00% 0.00%
C 39781 35314 0 0 0.00% 0.00%
D 39781 34416 0 0 0.00% 0.00%

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 14 188 1866 10.91 499 465 128.4
A 0 29 1799 10.39 499 465 128.4
A 14 204 1597 8.81 499 465 128.4
B 2 9 1554 10.67 491 462 102.3
B 12 226 1278 7.98 491 462 102.3
B 3 17 1264 7.84 491 462 102.3
C 1 81 1435 7.2 501 460 135.4
C 1 80 1395 6.91 501 460 135.4
C 12 241 1360 6.65 501 460 135.4
D 3 14 1099 5.98 428 388 118.9
D 6 231 1084 5.85 428 388 118.9
D 11 82 1080 5.82 428 388 118.9

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