ASTROSAT CZTI

Data Quality Report

Orbit 20160724_G05_213T02_9000000558_level2

Creation date: 2025-11-04T11:30:22.649613
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/AS1G05_213T02_9000000558cztM0_level2.fits modeM0/AS1G05_213T02_9000000558cztM0_level2_quad_clean.evt
Size (bytes)79,894,08074,249,280
Size76.2 MB 70.8 MB
Events in quadrant A487,114435,779
Events in quadrant B475,058439,510
Events in quadrant C483,058425,413
Events in quadrant D415,588387,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168760
B0165520
C0168070
D0189510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8048630.782803%
B8048660.820080%
C8048780.969185%
D80481181.466203%

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 9317 8047 0 0 0.00% 0.00%
B 9317 8047 0 0 0.00% 0.00%
C 9317 8047 0 0 0.00% 0.00%
D 9317 8047 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 0 29 417 8.68 127 119 34.3
A 7 110 400 8.19 127 119 34.3
A 0 30 365 7.17 127 119 34.3
B 2 9 411 10.58 125 120 27.5
B 12 226 346 8.22 125 120 27.5
B 3 17 320 7.27 125 120 27.5
C 9 233 362 6.9 127 118 35.4
C 1 80 341 6.3 127 118 35.4
C 12 241 329 5.96 127 118 35.4
D 11 82 338 7.08 118 107 32.6
D 6 83 316 6.41 118 107 32.6
D 1 19 314 6.35 118 107 32.6

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