ASTROSAT CZTI

Data Quality Report

Orbit 54933

Creation date: 2025-11-23T12:00:31.492498
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/AS1A14_014T01_9000006528_54933cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54933cztM0_level2_quad_clean.evt
Size (bytes)2,441,108,160336,139,200
Size2.3 GB 320.6 MB
Events in quadrant A31,805,4701,947,196
Events in quadrant B12,374,1622,486,464
Events in quadrant C20,838,9672,134,144
Events in quadrant D23,408,0981,879,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011212112
B0561759
C0795338
D0871899

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05120
B05120
C05120
D05120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25121531121.141674%
B251215552.209307%
C2512214885.923095%
D25122323212.865218%

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 27712 25125 4636 4636 16.73% 18.45%
B 27713 25127 263 263 0.95% 1.05%
C 27713 25129 1261 1261 4.55% 5.02%
D 27712 25128 3010 3010 10.86% 11.98%

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 3 14 10288968 17167.57 2421 2360 599.2
A 3 45 10012176 16705.62 2421 2360 599.2
A 13 248 1041257 1733.84 2421 2360 599.2
B 5 185 1222019 2166.81 2619 2519 562.8
B 4 81 210367 369.31 2619 2519 562.8
B 0 182 165708 289.95 2619 2519 562.8
C 12 252 4334136 6202.8 2531 2512 698.3
C 1 16 1649991 2359.16 2531 2512 698.3
C 7 2 1338713 1913.41 2531 2512 698.3
D 2 249 5531452 8070.16 2424 2317 685.1
D 11 129 2311879 3370.97 2424 2317 685.1
D 12 191 872622 1270.27 2424 2317 685.1

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