ASTROSAT CZTI

Data Quality Report

Orbit 23530

Creation date: 2024-06-27T18:55:46.774719
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/AS1A07_011T01_9000003482_23530cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23530cztM0_level2_quad_clean.evt
Size (bytes)704,050,560153,383,040
Size671.4 MB 146.3 MB
Events in quadrant A4,484,567999,599
Events in quadrant B5,139,1361,007,153
Events in quadrant C4,684,578977,718
Events in quadrant D6,331,168963,261

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204077
B02209313
C02076417
D02621415

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10080220.218254%
B10078940.932725%
C10076720.714569%
D100785195.149831%

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 19285 10085 2 2 0.01% 0.02%
B 19285 10086 49 49 0.25% 0.49%
C 19285 10084 0 0 0.00% 0.00%
D 19286 10083 343 343 1.78% 3.40%

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 13 254 17666 70.91 1159 1132 233.2
A 10 253 10674 40.92 1159 1132 233.2
A 3 137 10146 38.66 1159 1132 233.2
B 0 189 318144 1452.31 1157 1126 218.3
B 3 64 215984 984.3 1157 1126 218.3
B 0 229 27228 119.58 1157 1126 218.3
C 14 238 178164 673.04 1121 1127 263.0
C 7 247 97641 366.91 1121 1127 263.0
C 9 232 11125 38.01 1121 1127 263.0
D 9 85 1562521 5747.0 1118 1084 271.7
D 1 52 311591 1142.84 1118 1084 271.7
D 12 233 100602 366.28 1118 1084 271.7

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