ASTROSAT CZTI

Data Quality Report

Orbit 22557

Creation date: 2024-06-27T18:42:46.970609
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_148T05_9000003346_22557cztM0_level2.evt modeM0/AS1A07_148T05_9000003346_22557cztM0_level2_quad_clean.evt
Size (bytes)539,032,320105,865,920
Size514.1 MB 101.0 MB
Events in quadrant A3,792,145669,263
Events in quadrant B3,975,193681,297
Events in quadrant C3,872,547656,717
Events in quadrant D4,141,510642,889

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167042
B0171272
C0168472
D0180472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7999811.012627%
B79991471.837730%
C80001642.050000%
D80001171.462500%

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 8634 8001 0 0 0.00% 0.00%
B 8634 8001 5 5 0.06% 0.06%
C 8635 8002 0 0 0.00% 0.00%
D 8635 8002 53 53 0.61% 0.66%

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 12944 59.84 983 963 200.2
A 3 137 8682 38.55 983 963 200.2
A 0 226 8380 37.05 983 963 200.2
B 15 33 28986 146.25 987 963 191.6
B 5 172 27670 139.38 987 963 191.6
B 12 111 23403 117.11 987 963 191.6
C 14 238 145175 639.47 948 953 225.5
C 0 207 25177 107.41 948 953 225.5
C 10 22 7531 29.17 948 953 225.5
D 13 174 290495 1237.61 954 927 234.0
D 13 172 103733 439.39 954 927 234.0
D 7 223 99672 422.04 954 927 234.0

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