ASTROSAT CZTI

Data Quality Report

Orbit 53170

Creation date: 2025-07-28T13:47:24.458470
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/AS1C09_011T06_9000006490_53170cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53170cztM0_level2_quad_clean.evt
Size (bytes)1,099,235,52076,944,960
Size1.0 GB 73.4 MB
Events in quadrant A6,438,101624,263
Events in quadrant B5,357,740684,277
Events in quadrant C9,171,257509,218
Events in quadrant D19,163,8566,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241750
B0209880
C0322830
D0620310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72425257.249379%
B72424195.785695%
C7243169823.443325%
D7243718499.185420%

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 7242 7242 481 481 6.64% 6.64%
B 7242 7242 262 262 3.62% 3.62%
C 7243 7243 1536 1536 21.21% 21.21%
D 7242 7242 7080 7080 97.76% 97.76%

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 12 80 1651702 9383.4 707 689 176.0
A 12 3 927291 5266.27 707 689 176.0
A 8 249 583549 3312.64 707 689 176.0
B 10 191 1070182 7114.66 710 687 150.3
B 1 239 492462 3271.46 710 687 150.3
B 2 249 426678 2833.85 710 687 150.3
C 4 5 2086266 11875.4 632 624 175.6
C 15 224 1662814 9464.32 632 624 175.6
C 1 241 794826 4522.09 632 624 175.6
D 15 125 17856463 291609.65 209 199 61.2
D 2 249 294665 4808.91 209 199 61.2
D 1 0 42485 690.57 209 199 61.2

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