ASTROSAT CZTI

Data Quality Report

Orbit 20210731_A10_082T10_9000004602_level2

Creation date: 2025-12-28T00:27:21.122476
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/AS1A10_082T10_9000004602cztM0_level2.fits modeM0/AS1A10_082T10_9000004602cztM0_level2_quad_clean.evt
Size (bytes)285,117,120284,221,440
Size271.9 MB 271.1 MB
Events in quadrant A1,758,6081,758,661
Events in quadrant B1,638,0941,692,011
Events in quadrant C1,633,6941,518,784
Events in quadrant D1,486,6781,522,153

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0629720
B0994570
C0942680
D0804050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06300
B06300
C06300
D06300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A307806091.978558%
B3078014634.753086%
C3078030439.886290%
D3078012444.041585%

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 33815 30772 0 0 0.00% 0.00%
B 33814 30769 0 0 0.00% 0.00%
C 33814 30759 0 0 0.00% 0.00%
D 33815 30774 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 1667 10.66 457 429 116.2
A 7 110 1387 8.25 457 429 116.2
A 15 236 1305 7.54 457 429 116.2
B 2 9 1292 9.97 433 413 88.2
B 14 254 1118 8.0 433 413 88.2
B 3 80 1105 7.85 433 413 88.2
C 12 241 1156 6.79 433 404 110.7
C 3 187 1116 6.43 433 404 110.7
C 2 191 1076 6.07 433 404 110.7
D 3 14 1115 6.42 424 387 113.4
D 3 31 1055 5.89 424 387 113.4
D 10 189 1045 5.8 424 387 113.4

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