ASTROSAT CZTI

Data Quality Report

Orbit 20200302_C05_002T07_9000003542_level2

Creation date: 2025-12-09T17:28:39.395017
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/AS1C05_002T07_9000003542cztM0_level2.fits modeM0/AS1C05_002T07_9000003542cztM0_level2_quad_clean.evt
Size (bytes)80,637,12068,417,280
Size76.9 MB 65.2 MB
Events in quadrant A497,780390,382
Events in quadrant B475,060395,028
Events in quadrant C480,768376,207
Events in quadrant D386,330307,458

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175200
B0177870
C0180160
D0272470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8669500.576768%
B8669680.784404%
C86691221.407313%
D8669110512.746568%

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 9269 8669 0 0 0.00% 0.00%
B 9269 8669 0 0 0.00% 0.00%
C 9269 8669 0 0 0.00% 0.00%
D 9269 8521 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 29 492 10.9 129 121 34.0
A 7 110 388 7.84 129 121 34.0
A 0 30 378 7.55 129 121 34.0
B 2 9 419 10.8 125 120 27.7
B 2 8 389 9.72 125 120 27.7
B 14 254 330 7.59 125 120 27.7
C 1 81 387 7.75 126 118 34.7
C 1 80 386 7.73 126 118 34.7
C 12 241 340 6.4 126 118 34.7
D 15 46 300 6.35 110 99 31.6
D 3 14 292 6.1 110 99 31.6
D 6 231 274 5.53 110 99 31.6

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