ASTROSAT CZTI

Data Quality Report

Orbit 20250827_A14_022T05_9000006504_level2

Creation date: 2025-09-11T01:04:01.581931
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_022T05_9000006504cztM0_level2.fits modeM0/AS1A14_022T05_9000006504cztM0_level2_quad_clean.evt
Size (bytes)2,671,269,1201,146,484,800
Size2.5 GB 1.1 GB
Events in quadrant A12,663,0961,999,927
Events in quadrant B16,567,8543,117,432
Events in quadrant C11,650,5061,487,406
Events in quadrant D14,445,8182,762,396

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075260
B075280
C075220
D075260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04470
B04510
C04470
D04490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022477060
B011714100
C022271510
D013641620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36913020608655.830195%
B3701674718312.746409%
C36943919679953.269687%
D3700785610415.160047%

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 433903 364819 0 0 0.00% 0.00%
B 433901 367741 0 0 0.00% 0.00%
C 433901 360494 0 0 0.00% 0.00%
D 433901 366197 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 14 188 14636 10.39 3345 3094 1110.6
A 9 255 13029 8.95 3345 3094 1110.6
A 14 204 11637 7.69 3345 3094 1110.6
B 2 9 19052 14.72 4391 4153 1012.3
B 2 8 17034 12.72 4391 4153 1012.3
B 3 25 13848 9.58 4391 4153 1012.3
C 2 31 9274 5.99 3142 2856 1071.2
C 3 203 9097 5.83 3142 2856 1071.2
C 3 202 9034 5.77 3142 2856 1071.2
D 6 218 18821 10.89 4149 3678 1390.0
D 15 11 14166 7.54 4149 3678 1390.0
D 8 12 13156 6.82 4149 3678 1390.0

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