ASTROSAT CZTI

Data Quality Report

Orbit 33735

Creation date: 2024-06-27T20:51:56.811383
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/AS1A11_086T01_9000004816_33735cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33735cztM0_level2_quad_clean.evt
Size (bytes)978,937,920129,432,960
Size933.6 MB 123.4 MB
Events in quadrant A5,120,948808,481
Events in quadrant B7,557,725792,808
Events in quadrant C5,939,087812,650
Events in quadrant D10,295,684752,797

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222854
B0293733
C0238623
D0382803

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10871310.285162%
B108718337.662589%
C108711341.232637%
D108717747.119860%

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 13645 10873 11 11 0.08% 0.10%
B 13645 10873 659 659 4.83% 6.06%
C 13644 10872 131 131 0.96% 1.20%
D 13645 10873 745 745 5.46% 6.85%

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 4 104612 405.41 1273 1248 255.0
A 15 169 38203 144.94 1273 1248 255.0
A 0 31 20214 74.39 1273 1248 255.0
B 5 172 2276402 9726.63 1226 1194 233.9
B 5 255 119561 506.03 1226 1194 233.9
B 0 245 79910 336.52 1226 1194 233.9
C 15 214 493428 1745.51 1230 1240 282.0
C 0 10 213047 751.16 1230 1240 282.0
C 14 254 187815 661.67 1230 1240 282.0
D 8 195 2530190 8568.58 1205 1168 295.2
D 7 80 905322 3063.36 1205 1168 295.2
D 12 233 566537 1915.53 1205 1168 295.2

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