ASTROSAT CZTI

Data Quality Report

Orbit 20250801_C09_011T08_9000006492_level2

Creation date: 2025-08-19T01:37:19.815058
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_011T08_9000006492cztM0_level2.fits modeM0/AS1C09_011T08_9000006492cztM0_level2_quad_clean.evt
Size (bytes)3,508,081,9201,537,012,800
Size3.3 GB 1.4 GB
Events in quadrant A21,358,5484,510,914
Events in quadrant B20,261,8884,633,233
Events in quadrant C15,636,8882,350,433
Events in quadrant D17,867,6324,045,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012415080
B013186060
C025162590
D012858060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05290
B05300
C05300
D05300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091880
B091880
C091880
D091880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A452294296876.563651%
B452294332767.357161%
C45229419597443.328897%
D452293350557.750507%

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 688122 451457 0 0 0.00% 0.00%
B 688122 451686 0 0 0.00% 0.00%
C 688122 445164 0 0 0.00% 0.00%
D 688122 447960 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 24924 10.6 5649 5244 1856.7
A 9 255 22811 9.46 5649 5244 1856.7
A 14 204 19672 7.77 5649 5244 1856.7
B 2 9 23608 14.84 5388 5123 1246.0
B 2 8 21090 12.81 5388 5123 1246.0
B 9 173 16977 9.51 5388 5123 1246.0
C 2 31 12699 6.14 4204 3835 1442.7
C 7 221 12398 5.94 4204 3835 1442.7
C 3 203 12243 5.83 4204 3835 1442.7
D 6 218 24043 11.29 5118 4534 1727.7
D 3 30 16418 6.88 5118 4534 1727.7
D 8 12 16361 6.85 5118 4534 1727.7

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