ASTROSAT CZTI

Data Quality Report

Orbit 20200614_C05_012T07_9000003718_level2

Creation date: 2025-12-12T19:36:15.268240
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_012T07_9000003718cztM0_level2.fits modeM0/AS1C05_012T07_9000003718cztM0_level2_quad_clean.evt
Size (bytes)814,829,760972,060,480
Size777.1 MB 927.0 MB
Events in quadrant A5,098,9626,283,071
Events in quadrant B4,800,9266,190,771
Events in quadrant C4,874,5565,935,720
Events in quadrant D4,220,3925,350,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01470
B01470
C01470
D01470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01697280
B01814980
C01703590
D02297530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016860
B016860
C016860
D016860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A828837600.916955%
B8288319002.292388%
C8288312681.529867%
D8288334664.181798%

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 97418 82884 0 0 0.00% 0.00%
B 97418 82847 0 0 0.00% 0.00%
C 97418 82883 0 0 0.00% 0.00%
D 97418 82795 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 4967 11.5 1328 1251 323.2
A 7 110 4173 9.04 1328 1251 323.2
A 0 30 3964 8.39 1328 1251 323.2
B 2 9 3721 10.35 1270 1220 241.6
B 14 254 3149 7.99 1270 1220 241.6
B 5 128 3136 7.93 1270 1220 241.6
C 12 241 3476 6.99 1287 1212 323.7
C 9 209 3306 6.47 1287 1212 323.7
C 3 126 3241 6.27 1287 1212 323.7
D 6 67 3014 6.0 1204 1099 319.1
D 3 14 2984 5.91 1204 1099 319.1
D 7 3 2967 5.85 1204 1099 319.1

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