ASTROSAT CZTI

Data Quality Report

Orbit 39860

Creation date: 2024-06-27T22:09:33.734227
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/AS1A12_022T01_9000005498_39860cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39860cztM0_level2_quad_clean.evt
Size (bytes)179,700,48045,048,960
Size171.4 MB 43.0 MB
Events in quadrant A1,473,423298,939
Events in quadrant B1,684,737303,134
Events in quadrant C1,675,679289,522
Events in quadrant D1,595,096269,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064112
B071591
C069151
D069521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2839230.810144%
B2839561.972526%
C2839792.782670%
D2839692.430433%

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 2839 2839 23 23 0.81% 0.81%
B 2839 2839 29 29 1.02% 1.02%
C 2839 2839 73 73 2.57% 2.57%
D 2839 2839 61 61 2.15% 2.15%

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 10 83 241274 4106.77 283 276 58.7
A 13 248 111076 1888.11 283 276 58.7
A 10 255 9538 157.83 283 276 58.7
B 4 170 409415 7294.47 284 277 56.1
B 0 229 64324 1141.89 284 277 56.1
B 0 230 31441 555.62 284 277 56.1
C 9 187 443439 6635.47 278 279 66.8
C 15 214 117244 1751.33 278 279 66.8
C 1 16 17686 260.64 278 279 66.8
D 13 249 228620 3323.6 275 267 68.7
D 12 227 80637 1169.76 275 267 68.7
D 12 233 59327 859.6 275 267 68.7

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